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Talk me into / out of a Fitech/holley sniper system
- Thread starter TreeFarm
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Seems like lots of guys have similar issues with Fitech and Sniper systems but not always. I'll stick to my diesels and carbs.
It's called factory EFI. Millions of dollars were spent validating it, unlike aftermarket EFI.
I'll agree that factory EFI works far superior on a stock / stock-ish engine but there are limitations that go with it hence the market for aftermarket systems.
The criteria listed were "cheap, easy, reliable, quality". The engines we're talking about in this thread are not exotic. If a factory system was developed for your engine, that's generally easier to get running than the mandatory tuning phase of aftermarket stuff.
Keep seeing Aces fuel injection. Anyone tried this yet. Keep seeing good reviews. Its around $800
acesefi.com
EFI Systems, Fuel Injection Kits & Engine Management | Aces EFI
Manufacturer of EFI systems and engine management solutions for carb-to-EFI conversions, performance street builds, and race applications.
acesefi.com
TreeFarm
Internet fabricator.
Honestly I am plenty happy with factory tbi, not a single hiccup with it. The harness is basically stand alone from the factory, but they can be thinned more. Only takes 23 wires to run with fan control and all that junk. I get knock control which the bolt on aftermarkets dont have. Tunes are easy and once you get a bit more aggressive with timing and fuel they have great throttle response and power.
The only other way I would do it, would be full custom. Put injector bungs in my edelbrock intake, slap on a throttle body and some LS coils with a haltech or holley ecu.
But if i did all that, I might as well get my hands on a small 4cyl diesel and be done with it.
I'm running 4.3 vortec, so a good bit bigger cam than tbi and vortec heads, edelbrock carb intake with an adapter to tbi, 5.7l injectors, and headers. It tuned up super easy. Though with factory 4.3 injectors I went 100% duty cycle at about half throttle, tbi heads didn't flow nearly as much and they were super lean from the factory.
The only other way I would do it, would be full custom. Put injector bungs in my edelbrock intake, slap on a throttle body and some LS coils with a haltech or holley ecu.
But if i did all that, I might as well get my hands on a small 4cyl diesel and be done with it.
The only real limit is cam size, which for off road wouldn't be a problem since we want low end torque.
I'm running 4.3 vortec, so a good bit bigger cam than tbi and vortec heads, edelbrock carb intake with an adapter to tbi, 5.7l injectors, and headers. It tuned up super easy. Though with factory 4.3 injectors I went 100% duty cycle at about half throttle, tbi heads didn't flow nearly as much and they were super lean from the factory.
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I have had zero issues with my Holley Terminator system that wasn't self induced.
This weekend I'm flying to start a Holley Sniper, this will be my 5th setup and have had zero issues.
This weekend I'm flying to start a Holley Sniper, this will be my 5th setup and have had zero issues.
Another successful start up.I have had zero issues with my Holley Terminator system that wasn't self induced.
This weekend I'm flying to start a Holley Sniper, this will be my 5th setup and have had zero issues.
That shows you know how to install it. The issues with ECMs and parts failing comes laterAnother successful start up.
At one point I was loosely tracking outcomes of aftermarket EFI systems. Of the units that had a “failure” about half were strictly install problems. The other were part failure ironically lose to the the 1 year mark
That’s for all brands, but certain models had a seemingly higher sample size of data
Furthest any system has done is mine at about 2,500 miles
But yours is a Terminator. There’s a significant price difference between that and the Sniper/FiTech
You’re also only using the controller, with stock LS components
Pet peeve, maybe? The factory did NOTHING to validate and only had minor input to the design - regarding manufacturability. The factory ASSEMBLES, using the design handed to them. So many stupid posts about "What was the factory thinking..." They were thinking about how to build the design given to them - as they should.
my sniper had 2 defective hand held units 1 in box and 1st replacement . the known coolant temp sensor being 20-25* off to the cold side was crazy . i stuck in a used one from a tbi intake i had here and it fixed the problem . then the 1:1 throttle 4 butter fly openall the time was hard to push and seemed odd for a driver unit for guys replacing carbs . and last was the fuel mileage even with a tunner guy helping who had done tons of them he was baffled . i was getting 6.5mpg average . i stuck on a used card edelbrock 750 and about doubled that .
my pro flo 4 edelbrock has been flawless and love it . same money all in as a full sniper with timming control all in setup and better performance .
my pro flo 4 edelbrock has been flawless and love it . same money all in as a full sniper with timming control all in setup and better performance .
I guess I don’t understand why you keep quoting me. My issues with stock systems are tuning limitations
But since you bring up design, those early systems at least were designed for GM by Howell, and they certainly had input into how they were to be assembled
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