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The MSD annular ring injection design produces an air/fuel charge with much better mixture as well as an even distribution among the cylinders that our competition cannot match. Remember, this is not a later model Vortech engine with better cylinder heads.
I’m still more than happy with how the system is working, and as I stated I might do in the original article, I did some tweaking to see if I could increase fuel mileage. As far as a fuel mileage increase? Gives your classic the performance of a late model, Fear no trail - Runs vertical or at any angle. ). For a secure mount the injectors are sealed between the housing and the cast fuel rails. Discussion Starter ... EFI engines still need to warm up and, until they do, they require a richer mixture to run well. As far as I am concerned, the Holley Sniper system will be a permanent fixture on the small-block in my truck. Holley® has been the undisputed leader in fuel systems for over 100 years. TPS-The Atomic’s TPS is an automatic, self-calibrating, non-contact sensor.
Injectors-Fuel delivery is provided by four precision 80-pound injectors. Mount and Blades-The Atomic throttle body will bolt in place of a standard square bore carburetor and accepts most common throttle and kick down linkages. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! © 2020 Power Automedia.
A forum community dedicated to Ford Mustang owners and enthusiasts. It doesn’t pop or sneeze if I drive it cold. I think the answer would be: it depends. The “at cruise” air/fuel setting I settled on is 16.5. Hello I was looking at these two efi systems for my 1968 mustang and was wondering if there are any real differences between them besides the huge price difference. I can't speak to your question, but for curiosity sake, i would like to know what kind of carburetor you now have, and why you are not satisfied with its operation ? Holley carburetors have powered every NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. EFI engines still need to warm up and, until they do, they require a richer mixture to run well. *We might be biased but really, look at them!
Now, Holley EFI products power these cars and are dominating the performance world. Thank you for your time. The only concern I had where all the issues people had with the Sniper. MSD claims that their "Atomic" system is good for up to 625 hp...but I guess it would still be fine for my engine setup (496 cu.in. Wide-open performance feels the same but the part-throttle response improved so much that you’d swear the engine got bigger. In the original article, I mentioned I was not an EFI expert, but after some simple research – and with the help of the Holley tech line – I was able to inflict some simple adjustments to make the Sniper even better for my application.I started by adjusting the fuel prime – which squirts a small amount of fuel into the intake to aid in start-up. It looks like the Sniper with a Holley dual sync distributor may be the best way to go. One thing to keep in mind: go too far and engine damage can result. In the original article, I mentioned I was not an EFI expert, but after some simple research – and with the help of the Holley tech line – I was able to inflict some simple adjustments to make the Sniper even better for my application. Now, Holley EFI products power these cars and are dominating the performance world. I can pull into traffic without praying the engine won’t stumble or lurch. Next came air/fuel ratio adjustments. Are retrofit efi systems throttle body injected? https://www.msdperformance.com/produ...tbi/parts/2910, https://www.holley.com/products/fue...sniper_efi/sniper_4bbl_tbi_kits/parts/550-511, http://www.chevelles.com/forums/showthread.php?t=841082, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada.
The even bigger reward was the excellent drivability that it provides. After installing the Sniper and running for a few weeks with the initial air/fuel settings as mentioned, I saw roughly 1 ½ to two-miles per gallon increase. It’s not something that a lot of automotive writers are adept at doing.
That’s 10 weeks that I’ve been driving the Cheyenne since the install. As a single solution, or partnered with products from other Holley companies we can give you the edge you need over the competition!
I have a 66 with a 408 stroker and right now i have a 650 double pumper that works well, but the efi would be better. SEMA 2020: Stay Cool With DEI’s Black Floor & Tunnel, Carlisle Events Announces 2021 Event Schedule, And It’s, Bringing The Show To You: PRI Embarks On Cross-Country Road, Heidts New Four-Link Wide-Tire Mini Tub Kits For Early, Strapping Your Race Car Or Hot Rod To A Trailer Just Got, PerTronix Flame-Thrower Ignition Wires: The Perfect Wire For Your, SEMA 2020: Flaming River’s Microsteer Electric Power, Vengeance Racing And Huron Speed Team Up For An Epic ZL1, This ’71 Chevelle is A Candy Apple Cool Show, Street Dreams: Daryl Whitlow’s Twin-Turbo 1970, SEMA 2020: Taylor Cable Shows Up And Shows Out With Ignition, PRI 2019: CP-Carrillo Debuts Two New Connecting Rod, PRI 2019: Melling’s New High-Volume, High-Pressure Oil, PRI 2019: New Rocker Arms For Trick-Flow BBC, SBF Heads From, How Ken Lingenfelter’s Love for Corvettes Benefits So, Ray Evernham’s Ghost: A Frightening Blend Of Old And, Point of Pride: The Untold Story of Street Outlaws’ Kye, High-Performance Racing Fasteners: How ARP Fasteners Are, Schwartz Performance Talks G-Machine Chassis, Engine Pulleys — Old-School Tradition Meets New-School, Rare Rides: The 1969 Chevrolet Camaro COPO, ED-OP: Is The Evolution Of Building Horsepower A Good, SEMA 2020: Stay Cool With DEI’s Black Floor & Tunnel Shield, Carlisle Events Announces 2021 Event Schedule, And It’s Huge, Bringing The Show To You: PRI Embarks On Cross-Country Road Tour, How To Catch Distributor Gear Wear With Performance Distributors, $10K Drag Shootout 3: Episode 1: “10K Or Nothin'”, SEMA 2020: Flaming River’s Microsteer Electric Power Steering, NEW Holley Sniper EFI-Conversion Fuel Tanks, Building a 950-Horsepower, 10,000-RPM Engine As A Teaching Tool, Gaptized: Chip Cox’s Bold 2,000 HP Twin-Turbo LS C10 Pickup. ... My friend has an atomic efi system on his 351W and I am shocked how well it runs and how simple it was to install. Has anyone compared Holley Sniper, FiTech Easy Street, and MSD Atomic? From hardware failures to install issues. These are the fuel injection kits we see most often discussed and debated … All rights reserved. I'm looking to just convert to EFI, and have all advantages of it. Also, with no contact, there is nothing to wear out or replace. When I finished the install on my C10, I set it as follows: 13.1 at idle, 14.2 at cruise, and 12.9 at WOT. Good question. You wont have to let it warm up like a carb with a choke and I dont know how good you can tune a carb but based on that alone I believe I will get more performance out of the efi. After a few weeks of “tuning,” the truck is happy with a 13.9 setting. which brings me back to "square one" and choosing between the FAST EZ-EFI 2.0 (1,200 hp) which might work great but looks ugly, the soon-to be released Holley "Sniper" (available in a 1,200 hp version) and looks real nice or the FiTech "Meanstreet" (800 hp) and last, the FiTech GO EFI 8 (1,200 hp.
The TPS, MAP, IAT and fuel pressure sensors are all incorporated into the ECU saving you wiring and connections. I then pulled over and enriched the fuel mixture (lower numbers).
https://www.summitracing.com/parts/sne-550-510/overview/, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. I have adjusted the basic mixtures that I am comfortable with adjusting, and I am going to say that I was successful: the truck still runs, and I didn’t burn up any pistons. The throttle bores are 1.75” diameter and each blade is supported with precision roller bearings for smooth pedal operation. Usually, deadlines don’t afford me the opportunity to go back and revisit an install I had done months prior.
Better AFRs equal better idle quality, better starting, and better overall drivability throughout the rpm range. I really don't have a dog in this fight, but I have to point out one glaring error in the above post.
From hardware failures to install issues.
Not only did the truck drink less fuel, it gained some drivability.
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