The L89 engine is also equipped with aluminum cylinder heads which helps to reduce weight by 70 lbs. If you want timing control, Holley wants to sell you an MSD or Holley EFI plug and play distributor. You'll likewise intend to believe about exactly how long you'll keep your new trip, since that will certainly figure out if its resale value is a worry. Wiring harness, Sensors, ECU, Fuel pump and fuel line kit. I'm not sure of the MPG but my buddy owns a 71 Demon 340 with a Holley 750 DP and I have a Edelbrock E-Street EFI in my 71 Cuda 440. Fuel Pumps Regulators and Filters. The throttle-body system flows up to 800cfm and supports naturally aspirated engines making up to 650 hp. The Sniper EFI throttle body is a bolt-on replacement for a square-flange carburetor. Only after gathering my own data would I know the EFI truth for my truck and driving style. Whereas my carbed car has been rock solid for over 100k miles (new engine), gets 21 mpg riding at 80mph and puts 256 to the ground. Holley EFI W/ Holley Hyperspark Distributor? Hello everyone, long time lurker first time poster. EFI's have a tendency to get better mileage because the owner can sit down with a lap top and program in a better fuel curve. FuelTech FT500LITE EFI; Fueltech- Drivers/Sub-harness/Ignition; FuelTech FT600 EFI; Holley Performance Products. Be sure to look for pressure at the return. This type of EFI system is available from a fully emissions capable unit to a basic functional system. When this happens, you will experience fuel leaking out of the boost reference port. Holley 2300 is a 2 barrel carburetor, as I’ve said, and this means that it’s not as powerful as two previous carburetors. FuelTech FT500LITE EFI; Fueltech- Drivers/Sub-harness/Ignition; FuelTech FT600 EFI; Holley Performance Products. I have had my FiTech 1200 power adder installed on a 1969 Mustang for about 4 months now. my v10 f350 ford can do between 12 and 13. Personally, I have experienced a 4+mpg gain in fuel mileage utilizing such "built-in" features of GM EFI systems. 0, is the self tuning features. We test the impact on performance via the "butt dyno," the 1/8th-mile drag strip, the chassis dyno and gas mileage. M/S works great with the stock EFI intake and 24lb/hr injectors. This is a quick update on how it is doing. Either way, I've fully restored this truck and plan on keeping it for a while so I've decided to ditch the TBI fuelling and go to a real EFI setup, the Holley Sniper. INSTALLATION NOTES Check out Holley’s new line of high-flow throttle bodies, in-tank fuel pumps, adjustable regulators, cylinder head and camshafts for the Ford 5. I can tune it with a screw driver. Put the right tools in your toolbox! FlashScan from EFILive allows you to scan, data log and reprogram your vehicle for maximum performance and outstanding drivability. Lots of guys on the EFI forums running dual planes. 460 efi mpg what you getting - Ford Truck Enthusiasts Forums. The folks at Holley say the throttle body can be bolted to a spreadbore intake, or a spacer of some sort can be used. Find Holley Sniper EFI Self-Tuning Fuel Injection Systems 550-510 and get Free Shipping on Orders Over $99 at Summit Racing! Holley Sniper EFI self-tuning fuel injection systems from Holley deliver all the benefits—and none of the hassles. "500/500/25 Resto-Mod Special: Just Drop it in and Drive! We don't need no stinkin' LS"". This will be the third EFI system installed in this vehicle. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro-Stock champion for four decades. In closed loop, the EEC does everything it can to reach the holy grail of stoichiometric air/fuel ratio (14. It just flat out works well. I loved my csu but it got shit mileage. E-MAIL US 2-3 MPG; Expect 10-15 HP and Torque Gains Holley Sniper 2300 EFI Self-Tuning Master System 2 Barrel (2bbl) Black. The system also uses fuel and oil pressure inputs to maximize performance. Advanced Tips for EFI Tuning with Fuel Pressure. "500/500/25 Resto-Mod Special: Just Drop it in and Drive! We don't need no stinkin' LS"". I can't honestly complain about anything in regards to this EFI. He was very helpful. The main factor driving this was emissions compliance and fuel economy standards but everything has improved because of it. Key Auto Hospital is the ONLY Holley EFI Certified sales and installation center in Pensacola and surrounding areas with technicians trained at the Holley, Inc. I'll tell you this, if you need support the Holley wins, therr is alot of online forum support for Holley from it's users. i am contemplating a weiand 174 roots style supercharger for some more low end torque and seat of the pants fun. com offers a huge selection of circle track parts, drag racing parts and accessories from the biggest brands in drag racing including Edelbrock Ford Boss 302, 351C, 351M, 400 Intake Manifolds, Weiand Ford Boss 302, 351C, 351M, 400 Intake Manifolds and more at low everyday prices. Surely not a rocket set up for a 4000 pound plus truck. No fuel tank mods needed. My truck is a street cruiser but I am wanting a little more electronic programming and timing control, I'm hoping for a bit more MPG and to see if we can get a bit more horse power out of it. My father bought it new when I was 9. which is better as a daily driver setup, the holley 390 cfm or the su's? i found a good holley carb and arizonaz setup off craiglist pretty cheap. I have had my FiTech 1200 power adder installed on a 1969 Mustang for about 4 months now. The main factor driving this was emissions compliance and fuel economy standards but everything has improved because of it. At a given engine demand any tuned carb will deliver an. I installed the Holley Sniper EFI and the Holley Sniper Fuel tank on my 1971 440 Cuda mainly to get rid of the gas smell from my car. It also is a DD and gets so so gas mileage but he cannot tune it himself. Carbs have valves, springs and metering screws that need to be tuned and jetted, these EFI systems self adjust on the fly based on inputs from an O2 sensor, MAP sensor, temp sensors and a throttle position sensor. It's closer to a TPI setup. If you have the air/fuel ratio set properly and your engine can idle somewhat decently, even if it's by holding the throttle pedal down off closed-throttle to keep the engine from stalling, you can begin by setting a ball-park ignition advance value. The install is rather complex, but. Find Holley Terminator EFI Fuel Injection Systems and get Free Shipping on Orders Over $99 at Summit Racing! Bolt-on one of these Holley Terminator EFI fuel injection systems, answer a few basic questions, and let. Holley products for GM's popular LS engine are dominating the LS scene as well. Steve Morris Engines is no stranger to EFI systems! We offer proven solutions from FuelTech, Holley, F. The Holley injectors were rated to 48 lbs/hr at 43 psi of fuel pressure, but our system pressure was 58 psi for a potential of 55 lbs/hr. EFI isn't a magical bullet on these things. i have a lt1 383 stroker with mahle pistons with 10. All three systems require only simple inputs like engine displacement and injector sizing, and then they create their own spark and fuel maps that generate instant results at the touch of the key. This is a quick update on how it is doing. 1973 - 1979 F-100 & Larger F-Series Trucks - Ford 400 Holley Sniper EFI - Anyone ever ran a Holley Sniper EFI on a stock 400? It’s rated for a minimum of 250 hp. Holley; FuelTech. Its not that hard to do the stock EFI and way cheaper. I do realize my Holley 600 isn't exactly the best with that in mind I've read that putting in an AOD transmission will get more than an EFI upgrade?. We not only tune Holley EFI systems but you can also purchase them directly from us. Edelbrock is the most respected name in performance. The repair and testing and return was just under 2 weeks. Holley carburetors powered every Monster Energy NASCAR® Cup team and nearly every NHRA® Pro-Stock champion for four decades. As stated above my idle vac runs about 8”-9”, pretty close to the low limit for Holley EFI. The ZL1 is an all aluminum big block Chevrolet engine that weights approxiametly 550 lbs. Holley carburetors powered every Monster Energy NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. My truck is a street cruiser but I am wanting a little more electronic programming and timing control, I'm hoping for a bit more MPG and to see if we can get a bit more horse power out of it. Well, there is a short learning curve for the EFI computer when you put it on a different engine and use a mixed bag of parts, but it shouldn't take 4 tanks. Holley; FuelTech. It is well worth the investment and if you purchase EFI from us, it will always be a Holley Sniper. Suite A • Riverside, CA 92503 • 951-340-2624 • SITEMAP •. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. Applications using a turbo or supercharger may have a 2- or 3-bar MAP sensor. You can buy Holley 554-114 Dominator EFI and ECU System for sale at low price. I would like to do a conversion on my 65th Riviera too. Page 1 of 3 1 2 3 Next > Or pull it off and slap on a Holley to sell it and save the EFI for. The FE was introduced to replace the short-lived (in the USA) Ford Y-block engine, which American cars and trucks were outgrowing. manufactures fuel system components and polyethylene, steel and stainless steel gas tanks for street rods and special interest vehicles. Hitachi Turbo Charger For Nissan Navara D22 Zd30 Efi 3. Edelbrock performer rpm crate engine with Fitech Meanstreet EFI, 13-14 mpg with 800cfm Edel carb, about 18mpg with. I bought the expensive Holley ones but don’t plan on anything more in the future. The only article I found on Google about problems was one from back in 1991. Designed for all applications making up to 650 horsepower, the EZ-EFI Fuel System easily bolts onto any carbureted or multi-port application in a single afternoon, making it the easiest EFI system you will ever install. By design, there’s really only one thing that can fail on a regulator, and it's pretty rare. My newly acquired JimC rebuilt carb has not had a single problem starting down into the teens in the last week that I have had it. 0 system is starting to ship to customers, and at least one back-to-back dyno test has demonstrated the potential for an overall power increases in addition to benefitting from the self-learning tuning features on the EZ systems. Showcasing holley efi in stock now! Air Intake and Fuel Delivery. Holley now offers a full line of EFI components that are getting solid reviews, all the way up to the race Dominator controllers. Holley just brought EFI within range - introducing Sniper EFI master kits! It's economically priced so you can have all the benefits of EFI and still have money to finish or upgrade the rest of your ride! Perfect for street rods, muscle cars, off road trucks or nearly any carbureted vehicle. This basic manual contains the information necessary for the installation of the throttle body, wiring, and sensors. Holley makes just about every solution possible, including complete fuel tanks. Performance is served through improved drivability from idle to full throttle blasts. The FE was introduced to replace the short-lived (in the USA) Ford Y-block engine, which American cars and trucks were outgrowing. We test the impact on performance via the "butt dyno," the 1/8th-mile drag strip, the chassis dyno and gas mileage. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro-Stock champion for four decades. Holley 550-510dk Sniper Efi Self-tuning Hyperspark Kit Small Blockbig Block. I have been running and tuning Holley carbs for 45+ years and I'm pretty damn good at it. also sells In-Tank fuel pumps for your special project. Converting from a carburetor to electronic fuel injection can be both easier and less expensive than some believe, and the Holley EFI unit we’re exploring today is a shining example of that. Once you can get your head into the system Its really quite intuitive to tune and adjust to the way you like to drive. This means the sensor is designed to read up to 1-bar of atmospheric pressure difference. The SEMA Data Co-op has become “data central” for hundreds of specialty parts brands, representing millions of part numbers, and tens of millions of vehicle applications. The 265 cu in (4. Holley makes just about every solution possible, including complete fuel tanks. This model weighs 11. If your car is getting 7-8 mpg then it's running way too rich or you have it floored most of the time. 5 depending on where I am. My understanding is that the Holley EFI will work with low idle vacuum engines as long as the vacuum is greater than 6”-7” at idle. New and Used Automotive Parts and Accessories On Sale. Yeah its a ford so you would have to change a few settings,firing order, CID, ignition type, and so on but might give you a good starting point. It will have to haul a couple dirt bikes in the. im a little nervous about the compression ratio. There was actually nothing wrong with the 302 I had before, but wanted a classic that would get good gas mileage, start and run consistently and smoothly, and not make me worry about taking off on a long distance drive. With three new Holley EFI systems on the market today that covers just about every application known to man, we decided to make the fuel delivery system swap on our project engine using a Holley HP EFI System. I'm running a Holley HP EFI on my stacked 331. Connection Self-Tuning Holley Sniper EFI Self-Tuning Kit at Amazon UK. If you are looking for Holley 554-114 Dominator EFI and ECU System, you're come to the right place. FuelTech FT500LITE EFI; Fueltech- Drivers/Sub-harness/Ignition; FuelTech FT600 EFI; Holley Performance Products. And like mentioned above, split the exhaust manifold or put an aftermarket header on. lots of fabricating with 3 different air cleaners housings, a drop base aftermarket A/F housings, welding, and then cover it with a chrome ring. how should i go about getting more hp 51 Answers. 0 on my pickup for a while because of the Comp cam. Sniper; Dominator/HP. After looking at the different. i really do like the durability of my '01 dodge but it is in great need of some serious hp upgrades. Changing the fuel pressure on an EFI System is an effective method of affecting engine performance and making more power. Whether you drive a Dodge Ram or Jeep, Chrysler 300, Dodge Magnum/Charger or the Hot Challenger R/T and SRT8 The BBK engineers have designed a great simple bolt on throttle body - that will add 12-15 Horsepower without sacrificing mileage or drivability. What manifolds work best, what off-the-shelf TBI systems work best. For over 20 years Tanks Inc has been retrofitting non EFI gas tanks with internal fuel pumps using their PA Series EFI Gas Tank Conversion Module. Holley EFI Alternate Tinkerings. As of 2016 Holley EFI is also used to control every NHRA Pro Stock car that goes down the strip!. I looked for Holley's on Ebay and the 1984 6520 is not showing up much. Connection Self-Tuning Holley Sniper EFI Self-Tuning Kit at Amazon UK. HOLLEY EFI & PERFORMANCE BRAND PRODUCTS. But are the benefits of electronic fuel injection worth the cost and effort of installation? That question is so 2015! Holley is released their new Sniper EFI system that is exciting for several reasons. Read honest and unbiased product reviews from our users. basically its a steroids throttle body fuel injection. Holley just brought EFI within range with their Sniper 2300 EFI Self-Tuning 2 Barrel (2bbl) kit with handheld EFI monitor. One line to the battery one to Key on fuse in fuse block,one to fuel comamd center, a ground from command center to body bolt, one to tach wire on HEI. 6L Stroker Engine comes in both EFI and Carbureted options and is a direct replacement for your stock 4. One for N/A vehicles and one for boosted vehicles. I'm not about to pull the efi off my Ram Rebel to replace it with a carb. Rock auto had the best price on the EFI tank sender (walbro 400 or similar drops in) and unless you go multiple pumps for a boosted setup a factory turbo or EFI monte sender fits great. UNIVERSAL KITS. WARNING This product can expose you to chemicals including Cadmium which is known to the State of California to cause cancer, birth defects or other reproductive harm. Over the past 50 years, the venerable Holley carburetor hasn’t changed much. i dropped the truck off and they did all of the rest for $1760 installed. Will my air cleaner still fit the new throttle body or do I start over. This would be most any aftermarket intake manifold for Ford, Chevy, AMC, Dodge, etc. Edelbrock EFI systems, Holley EFI systems, and other electronic fuel injection systems are intuitive, self-adjusting and use sensors to monitor a Camaro, Corvette or other Chevy’s needs. I've run the Holley Pro-Jection system (an early one) and when it dies switched to an Affordable Fuel Injection (AFI) system (GM based, OK Holley designed). Several companies are now making bolt on kits. Find Efi In Stock Now. Scoggin Dickey Parts Center » Holley EFI. The Basics of Air Fuel Ratio What is lambda, and the difference between narrow band and wide band 02 sensors? Contributed By: Enginebasics. AFR's are right on target and I can't wait to put more miles on it!! If you are on the fence about getting EFI, DO IT. Supports 800+ HP. International Full Size Jeep Association > Tire Kickin' > Fuel Injection: Holley EFI W/ Holley Hyperspark Distributor?. You'll likewise intend to believe about exactly how long you'll keep your new trip, since that will certainly figure out if its resale value is a worry. The all new Atomic EFI system was designed with two goals: simplicity and performance. Its goal is to make EFI conversions so simple that all you have to do is bolt the unit up, connect a few wires, and you're set. Holley HP; FORD MOD and COYOTE Kits; GM Engine Kits. The ZL1 is an all aluminum big block Chevrolet engine that weights approxiametly 550 lbs. Holley Terminators are self-learning, Commander 950's are not. Also, I believe that the Holley 950 is only available in the full race version. If I ever bought a '60s muscle car again, I would go EFI eventually. It seems like it gets better gas mileage but I haven't checked it. But once I installed my MSD Atomic TBI system, I put the double pumper on the shelf and have not given it a second look since. Sniper; Dominator/HP. (Motor runs too hot) I am also freshening up the motor, redoing the heads, oil pump, clean out the sludge, New Cam and lifters, and will be installing the Holley EFI I spoke about above. Over the past 50 years, the venerable Holley carburetor hasn’t changed much. It's a 670 cfm two barrel throttle body setup, and you can usually pick up complete used systems on ebay for around 3-400 dollars. Focusing on car performance on the internet. Holley have released an affordable kit that I think will work out nicely. If you want to datalog, again the Holley wins. With the Holley and FiTech units, they have a built in fuel pressure regulator. He also said that, in all reality, that a properly tuned carburetor will get just as good gas mileage as the EFI. Holley has been the undisputed leader in fuel systems for over 100 years. The Holley Sniper EFI Self-Tuning Kits feature all the benefits of EFI, and are a perfect option for street cars, muscle cars and off-road vehicles. 5 lbs, so you get that optimized lightweight performance too. That’s where electronic fuel injection is a better choice. Please choose from the "Custom Parts for Your Selected Vehicle" menu. $1,200 for the Terminator X Max which includes transmission control and they have drive by wire option as well. 0, is the self tuning features. The throttle-body system flows up to 800cfm and supports naturally aspirated engines making up to 650 hp. So, entering very early only equates to you saving on gas mileage. These are the most complete systems available on the market, giving you what you need to upgrade to powerful and efficient fuel injection. Holley® has been the undisputed leader in fuel systems for over 100 years. If you have been contemplating converting your classic Ford Bronco to an electronic fuel injected 5. (Motor runs too hot) I am also freshening up the motor, redoing the heads, oil pump, clean out the sludge, New Cam and lifters, and will be installing the Holley EFI I spoke about above. The 265 cu in (4. Part 2 of our test on MSD's new Atomic EFI Conversion kit takes us to the streets of Southern California. Summit racing sent us four of the most popular off-road carburetors including a Holley 750-cfm, a brand-new model Holley Street Avenger 670-cfm, an Edelbrock Performer 750-cfm, and an Edelbrock Q. Holley Terminators are self-learning, Commander 950's are not. Discussion Starter • #1 • Jun 10. Universal EFI Series Speedometers by Holley®. The Ford Small Block is a series of automobile V8 engines built by the Ford Motor Company beginning in July 1961. FAST's EZ-EFI Self-Tuning Fuel Injection Kits are the worlds simplest fuel injection system on the market today. On the other hand, they might suffer from carburetor problems, including bad gas mileage, and do nothing about it. It’s simple design and near infinite adjust-ability have long made it a favorite among enthusiasts. Holley products for GM's popular LS engine are dominating the LS scene as well. Advanced Tips for EFI Tuning with Fuel Pressure. It will have to haul a couple dirt bikes in the. In 1992 I bought the Holley Pro4 injection for my 340 and a Mopar M1 manifold, when my Signet was close to running condition, the Holley was removed and a carburetor installed in its place because no one at the time knew WTF it was about. It also has improved the mileage. Fuel Pumps Regulators and Filters. Has anyone installed the Sniper EFI system on a vintage Mopar? Specifically wondering about how the fuel return was handled and if the pump was mounted in tank like Holley suggests or frame rail mounted. I would also use the article-recommended Aeromotive Phantom Stealth-340 based in-tank fuel pump setup. I am new to this site. Yet still my milage decreased. Ensure the Holley EFI software is not open and the ECU is not powered on/connected when installing the new software Unless you are looking for every little mpg. This project took place in July 2004. Designed for all applications making up to 650 horsepower, the EZ-EFI Fuel System easily bolts onto any carbureted or multi-port application in a single afternoon, making it the easiest EFI system you will ever install. Brakes; Cooling; Drivetrain; Electronics; Engine; Exhaust; Exterior; Fluids; Forced Induction; Fuel & Ignition; Garage & Safety; Gauges; Intake; Interior. I'm seriously considering switching to an EFI system for my 67 Dart. 5 depending on where I am. 1986 F150 4x4, 300 4. Ford's first straight-6 engine was introduced in 1906 in the Model K. The folks at Holley Performance Products were kind enough to send us a Terminator EFI, which we recently installed in Hagerty Parts Finder Davin Reckow's classic Chevelle. You don’t have to be a tuning expert with decades of experience for the system to run optimally. Hey everyone, As some of you know, I modified my 300 with an Offenhauser DP intake, EFI manifolds, 2. you have to tune to a target A/F ratio. dont run the edelbrock never get it set up right on a ford motor nothing against them they work great on chevys but go with the holley on a ford motor learned the hard way my old time ford engine builder tried to warn me but i went against him and got the edelbrock first on a healthy 289 never could get the damm thing set up right dropped a holley on ran like a top !. Featured items are first come, first serve, so Order Online Today. i emailed the company today asking if the components are all made in America and a few other things. The thinking was that the engine would produce enough torque at a low enough rpm to meet the needs, and the small bore would help meet emissions standards. Holley 554-114 Dominator EFI and ECU System FOR SALE !!! Holley 554-114 Dominator EFI and ECU System. Holley’s Avenger EFI can be used as a basis for a future upgrade to their HP EFI system as well. This basic manual contains the information necessary for the installation of the throttle body, wiring, and sensors. A little more? LOL! Compared to the FAST EZ-EFI, there's practically infinite tuning capabilities with any of Holley's new EFI systems. The AFI system was a world better than the early Holley, but they have since gotten their aftermarket crap together from everything I've seen and read. Designed for all applications making up to 650 horsepower, the EZ-EFI Fuel System easily bolts onto any carbureted or multi-port application in a single afternoon, making it the easiest EFI system you will ever install. If there is anything you see here that needs clarification please Contact Us. Doing an EFI swap was the single largest task I had taken on since owning my 65 Fastback. Just ask google and the internet will give it to you. 50's, Grabber Blue, Totally Rhyno Lined, 3inch Body Lift, Goodyear Wrangler Duratrac 33x12. 8 L Engines LUV: 4 CYL 2 BBL HITACHI: 1972: All. There are some things you can do to improve on it. NEXT GENERATION EFI When choosing to upgrade your engine to modern fuel injection, look no further than Edelbrock’s Pro-Flo 4 EFI systems. We had one conversion that gained seven mpg, but that depends on a lot of factors. If you are going to tune with a laptop, the Holley wins. Of course overall if it was a big improvement or not. Supports 800+ HP. Holley products for GM's popular LS engine are dominating the LS scene as well. After all, they're buzzy, down on power, and they tend to remind us of Saturday. A couple of months ago we did a 2500 mile road trip with the EFI pretty much locked into the dyno tune we had used a few days before. While intimidating at first (as all wiring jobs are), the install was incredibly simple. "Driving around town after the tune I was averaging, depending on driving conditions, nearly 12 MPG, whereas before it was running at about 6 to 7 on the carb — that is nearly twice the fuel mileage with the Holley Terminator TBI EFI system. I could never get that holley tuned right. •FiTech Fuel Injection 2016-2019 • 12370 Doherty St. With the Holley and FiTech units, they have a built in fuel pressure regulator. It's the 900 cfm throttle body system and the supplied 4 85 lb/hr injectors are enough to run E85, and I do. I'd go with a 600cfm Holley for a decent blend of power and economy, or a 390cfm Holley if you want to squeeze the most economy out of it. Now, Holley EFI products power these cars and are dominating the performance world. Eliminate typical carburetor cold starting issues, hesitations, flooding and vapor lock. Holley 554-114 Dominator EFI and ECU System FOR SALE !!! Holley 554-114 Dominator EFI and ECU System. If your ignition system is in the list below and already installed on your engine, you can skip this step. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. And like mentioned above, split the exhaust manifold or put an aftermarket header on. Then there are folks who buy efi because it's state of the art fuel system. For a track car I would go with an e85 csu. Performance EFI How to properly modify your EFI fuel system for performance applications By: Jim Roal. And they originally intended to do that with the Terminator EFI system, though there is now similar plans to introduce a twin Sniper EFI setup. Holley just brought EFI within range with their Sniper 2300 EFI Self-Tuning 2 Barrel (2bbl) kit with handheld EFI monitor. Wiring holley dominator efi I wired the green wire to the tan/light green wire that goes under the hood and leads to the fuel pump relay under the drivers seat. They all need a bit of tweaking and adjustment on install but then so do. So you really have to compare the EFI throttle size to the carb's venturi size. There are some things you can do to improve on it. I really like the system a lot, in speed density mode at high altitude with a large cam I get next to no vacuum but I'm still able to tune it enough to get 10 mpg with no overdrive, on E85!. I am already ducking on this part , lol , The best 4 brl ever built ( and Ive worked on them all ) as for gas mileage was the Quadrajet ( even Ford Used it for a few years ) , it was not the number one for Power, although on a 350 and smaller motor its plenty big AND set up right cant be beat for MPG , It is an Ugly Bastard though , lol. Looking into the plenum of the Holley EFI intake shows considerable design differences between it and intakes for carbureted use. I have been a FAST XFI fan for years but if I had to start another EFI program I would go with the Holley HP. The combination of the EFI-ready fuel tank and the Holley Sniper EFI system offered an easy and clean installation. The Holley 300-137 is a spider-shaped intake manifold that provides 2,500-7,000 RPM broad power band of performance. We check out FiTech's new fuel-injection system and put it up against a carburetor in a heads-up EFI dyno test on a mild junkyard LS engine. If you want to datalog, again the Holley wins. Big Block Chevy EFI 8 Stack NEW Hilborn Street-Strip Setup - $7,502 Avail for : LS , SB, MoPar, Ford, Super mpg. Find Holley Sniper EFI Self-Tuning Fuel Injection Systems 550-510 and get Free Shipping on Orders Over $99 at Summit Racing! Holley Sniper EFI self-tuning fuel injection systems from Holley deliver all the benefits—and none of the hassles. I like the sump tank for the electric fuel pump in my system. For years we have worked with Holley and used and supported their EFI systems. One huge advantage to EFI is that when set up, it will never wash the rings or cylinders with fuel. i just read that FiTech fi out of California will be launching a 4 inj and 8 inj TBI unit on March 1st. They shared a Holley throttle body, until the Magnum versions, and used a non-vacuum advance distributor. 1/4" ain't gonna do it. The user interface couldn't be easier and the online support is incredible. Details on building a Ford straight-six engine. Page 1 of 2; Next; Air Fuel Ratio & MPG Monitor. 0 efi kit with sensors and harnesses and a set of 46 lb/hr injectors. They call it the Super Sniper EFI and claim it will support up. Holley® has been the undisputed leader in fuel systems for over 100 years. CB Performance has a great selection of Fuel Injection Systems, Digital EFI Systems and Turbos. lots of fabricating with 3 different air cleaners housings, a drop base aftermarket A/F housings, welding, and then cover it with a chrome ring. Speedometer Range: 0-160 MPH. Showcasing holley efi in stock now! Air Intake and Fuel Delivery. My son built a 99GT with a 4 cam swap. 4L 2V MOD). efi systems. You know any other guy, he goes with a modern Injection on a old nailhead like you. Report Abuse. Now, Holley EFI products power these cars and are dominating the performance world. I talked extensively this morning with an older tech guy at Holley. I have an old Holley "Economaster" 450 cfm on it now (4-bolt 350, no real mods) and it runs reasonably well, but I've alwasy wanted to switch it to EFI. But blowing a thousand bucks or more has been a bit out of my price range. Summit Racing carries Sniper EFI throttle body kits as well as Sniper EFI fabricated intake manifolds designed to maximize your vehicle's power while going easy on your budget. It is easy bolt-on horsepower that still gives good gas mileage. That changed when Holley released its line of Pro-Jection fuel injection systems. i was looking at the QF, or holley brands. CB Performance Racing Products has VW Performance, Electronic Fuel Injection Systems, Turbos, CNC Ported Cylinder Heads, dune buggy parts, dropped spindles, Weber, Dellorto, crankshafts, connecting rods, complete turnkey engines and disc brake kits for aircooled volkswagens. This is a discontinued product, but they are available used on sites like thirdgen. Holley Performance 534-227 Terminator Efi Tbi System. my v10 f350 ford can do between 12 and 13. The carb ran good but after driving the car you and the house smelled like an old gas station.