FI Tech engine management system.......anyone use it?
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TECH Enthusiast
Joined: Apr 2023
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Just did the Holley with factory gauges and in reality, is decently simple. If you are into wiring can do it yourself or do like I did and reach out to someone like Current Wire Performance and have them do a harness to integrate with the Holley or have them do up a full harness that incorporates it all. Only catch is running two ECT sensors and Oil pressure gauges.
I had considered doing a digital Holley dash, but a square in a semi circle just wasn't visually appealing to me.
I had considered doing a digital Holley dash, but a square in a semi circle just wasn't visually appealing to me.
Thanks for the info. Can you tell me a guesstimate on cost if they made me a Full Harness to incorporate it all plus my 4L80E.
Does the 2nd ECT splice into the factory one for its reading or is drilling/threading a new port required?
I know oil pressure can get tapped in a couple different places, right?
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Joined: Oct 2022
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From: Louisiana
There are plenty tuners in Florida, you do realize there is people like drtuneemall in Florida right? He is one of the best tuners around. Your badly mistaken if you think there arent good tuners out your way.
ksr performance and fabrications is in Gainesville, that's a bad *** shop and there all over YouTube and social media.
ksr performance and fabrications is in Gainesville, that's a bad *** shop and there all over YouTube and social media.
I do not believe so. For the longest time I kept the factory dash in my C6 Z06 and resisted changing it out to an aftermarket one but after a while I gave in. I was missing so much additional information on the dash from the computer and now that I replaced it I wouldn't know what to do without it.
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I hear you. I’ve seen the little square digital dash in an F-Body. To me…..it’s not for me. That’s just me.
Thanks for the info. Can you tell me a guesstimate on cost if they made me a Full Harness to incorporate it all plus my 4L80E.
Does the 2nd ECT splice into the factory one for its reading or is drilling/threading a new port required?
I know oil pressure can get tapped in a couple different places, right?
Thanks for the info. Can you tell me a guesstimate on cost if they made me a Full Harness to incorporate it all plus my 4L80E.
Does the 2nd ECT splice into the factory one for its reading or is drilling/threading a new port required?
I know oil pressure can get tapped in a couple different places, right?
2nd ECT is for reading on stock ECU to turn fans on/off and report on the cluster. Oil pressure is used for the cluster. I did an extension piece and put in another sensor to read off same point as the stock one for the dash and the Holley to log and all read within range.
There are plenty tuners in Florida, you do realize there is people like drtuneemall in Florida right? He is one of the best tuners around. Your badly mistaken if you think there arent good tuners out your way.
ksr performance and fabrications is in Gainesville, that's a bad *** shop and there all over YouTube and social media.
ksr performance and fabrications is in Gainesville, that's a bad *** shop and there all over YouTube and social media.
If I had to guess on harness maybe 700-800 range, just email them and tell them what you want and they can get you a quote. If going that route you can buy the Holley ECM by itself with the harness they build/provide you.
2nd ECT is for reading on stock ECU to turn fans on/off and report on the cluster. Oil pressure is used for the cluster. I did an extension piece and put in another sensor to read off same point as the stock one for the dash and the Holley to log and all read within range.
2nd ECT is for reading on stock ECU to turn fans on/off and report on the cluster. Oil pressure is used for the cluster. I did an extension piece and put in another sensor to read off same point as the stock one for the dash and the Holley to log and all read within range.
Both those guys have been in the game for a minute, I've been following them both for a long time, I'd let either of them tune my stuff.
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Joined: Oct 2022
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From: Louisiana
have you ever watched drtuneemall's videos on YouTube? He is very knowledgeable, ive watched plenty of his videos when trying to learn on my own truck how to do stuff and ive also worked out in the tampa area a few times and met a few car guys while i was out there and there is alot of bad *** rides out there and very knowledgeable people. Hell all the biggest car enthusiast live in Florida.
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Verdad Gallardo TECH Fanatic
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From: Louisiana
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From: Bostwick, GA.
"Ok, so Holley Term X seems like the way to go.
Be nice to have a guru ls tuner down here like we see in other places around the country."
Spend 3 mins on a search for south Fla.
There are several good shops.
Here's 1 hit. Have not had them tune anything.
Welcome to Palm Beach Dyno
Be nice to have a guru ls tuner down here like we see in other places around the country."
Spend 3 mins on a search for south Fla.
There are several good shops.
Here's 1 hit. Have not had them tune anything.
Welcome to Palm Beach Dyno
Thread Starter
TECH Enthusiast
Joined: Apr 2023
Posts: 531
Likes: 82
"Ok, so Holley Term X seems like the way to go.
Be nice to have a guru ls tuner down here like we see in other places around the country."
Spend 3 mins on a search for south Fla.
There are several good shops.
Here's 1 hit. Have not had them tune anything.
Welcome to Palm Beach Dyno
Be nice to have a guru ls tuner down here like we see in other places around the country."
Spend 3 mins on a search for south Fla.
There are several good shops.
Here's 1 hit. Have not had them tune anything.
Welcome to Palm Beach Dyno
Several tuners over the years I've heard of around here that are supposed to be great also come with some horror stories, so you never know.
For a spot on tune, I'd fly someone in for a few days.
Tuning is one aspect, but the hardware is the other.
I've known more than a few guys who've had serious problems with the Holley stuff, my buddy bricked his high dollar Holley screen after an update Holley recommended and afterwards Holley basically said sorry about your luck. He never even got it into the truck he was building.
Had another guy whose ECU crashed and after Holley support was unable to help, they told him to buy a new ECU.
There's lots of people online who can help because Holley's support.....well it sucks.
I haven't heard any horror stories about the Haltech, just guys who moved from Holley to Haltech because of those kinds of problems.
For me personally, I don't have the funds to just go out and buy a new screen or ECU if it takes a crap for whatever reason so I went with the Haltech.
I've known more than a few guys who've had serious problems with the Holley stuff, my buddy bricked his high dollar Holley screen after an update Holley recommended and afterwards Holley basically said sorry about your luck. He never even got it into the truck he was building.
Had another guy whose ECU crashed and after Holley support was unable to help, they told him to buy a new ECU.
There's lots of people online who can help because Holley's support.....well it sucks.
I haven't heard any horror stories about the Haltech, just guys who moved from Holley to Haltech because of those kinds of problems.
For me personally, I don't have the funds to just go out and buy a new screen or ECU if it takes a crap for whatever reason so I went with the Haltech.
Yea, I can search, but you never know what you're getting. I mean, who's the best LS tuner around, anywhere? Shops like LMR, Katech, Nelson Racing Engines, Steve Morris, who do they use?
Several tuners over the years I've heard of around here that are supposed to be great also come with some horror stories, so you never know.
For a spot on tune, I'd fly someone in for a few days.
Several tuners over the years I've heard of around here that are supposed to be great also come with some horror stories, so you never know.
For a spot on tune, I'd fly someone in for a few days.
Guys with the few horror stories is usually someone brought them a grenade with the pin half pulled and then leaned on it.
It's your car, if you tell the tuner to keep going, well then that's on you.
When my tuner said we should stop, I did and my car is still running lol.
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Joined: Dec 2020
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From: Ohio
TECH Regular
Joined: Dec 2020
Posts: 423
Likes: 131
From: Ohio
Tuning is one aspect, but the hardware is the other.
I've known more than a few guys who've had serious problems with the Holley stuff, my buddy bricked his high dollar Holley screen after an update Holley recommended and afterwards Holley basically said sorry about your luck. He never even got it into the truck he was building.
Had another guy whose ECU crashed and after Holley support was unable to help, they told him to buy a new ECU.
There's lots of people online who can help because Holley's support.....well it sucks.
I haven't heard any horror stories about the Haltech, just guys who moved from Holley to Haltech because of those kinds of problems.
For me personally, I don't have the funds to just go out and buy a new screen or ECU if it takes a crap for whatever reason so I went with the Haltech.
I've known more than a few guys who've had serious problems with the Holley stuff, my buddy bricked his high dollar Holley screen after an update Holley recommended and afterwards Holley basically said sorry about your luck. He never even got it into the truck he was building.
Had another guy whose ECU crashed and after Holley support was unable to help, they told him to buy a new ECU.
There's lots of people online who can help because Holley's support.....well it sucks.
I haven't heard any horror stories about the Haltech, just guys who moved from Holley to Haltech because of those kinds of problems.
For me personally, I don't have the funds to just go out and buy a new screen or ECU if it takes a crap for whatever reason so I went with the Haltech.
My Haltech support has been absolute ***
Had dbw codes and was asking questions about it and they wouldn't help just said "ask your installer". Bro I'm the installer. The harness was an elite harness reworked for an R3 from Tuned By Shawn and this was because R3 LS Harnesses literally didn't exist when I bought it
Then I spoke with them at PRI and the dude seemed like he was trying to help but was also a dick. Said my dbw code was most likely due to "having a cheap sensor" somewhere causing sensor ground issues. On the Haltech group on FB someone posted by default the dbw setting calibrates wot at mechanical stop and messes up the dbw. Still haven't fixed it (car spun rod)
Then on cranking my IC7 and ECU turns off and on from the voltage drop and throws all HCO codes. Currently have 00 wire from battery to starter then 4 gauge to R3. They say it's because I'm supposed to wire it on it's own wire direct to battery. Which is against NHRA kill switch rules. At least my interpretation of the rules. They've still not really given me a solution for this
I don't hate them, but Haltech, Holley, every other big company are not your friends and when you're not a big YouTuber or sponsored racer they're out to make money. They're not out to do favors (semi understandable)
Thread Starter
TECH Enthusiast
Joined: Apr 2023
Posts: 531
Likes: 82
Tuning is one aspect, but the hardware is the other.
I've known more than a few guys who've had serious problems with the Holley stuff, my buddy bricked his high dollar Holley screen after an update Holley recommended and afterwards Holley basically said sorry about your luck. He never even got it into the truck he was building.
Had another guy whose ECU crashed and after Holley support was unable to help, they told him to buy a new ECU.
There's lots of people online who can help because Holley's support.....well it sucks.
I haven't heard any horror stories about the Haltech, just guys who moved from Holley to Haltech because of those kinds of problems.
For me personally, I don't have the funds to just go out and buy a new screen or ECU if it takes a crap for whatever reason so I went with the Haltech.
I've known more than a few guys who've had serious problems with the Holley stuff, my buddy bricked his high dollar Holley screen after an update Holley recommended and afterwards Holley basically said sorry about your luck. He never even got it into the truck he was building.
Had another guy whose ECU crashed and after Holley support was unable to help, they told him to buy a new ECU.
There's lots of people online who can help because Holley's support.....well it sucks.
I haven't heard any horror stories about the Haltech, just guys who moved from Holley to Haltech because of those kinds of problems.
For me personally, I don't have the funds to just go out and buy a new screen or ECU if it takes a crap for whatever reason so I went with the Haltech.
Gotcha, thanks
To all:
Would I be leaving HP or safety of the tune or anything negative by doing the 0411 repin.
How would the 0411 do with a max effort F1-A-94 set up or a big single turbo?
Not a great idea, but can be done in the right circumstance. The issue becomes having to scale the tables to make all of them capable of modification, and the downside is that you lose granularity between cells. Most people don't want to risk a high $$$ build, when an aftermarket system will be a ton easier and more reliable to make work.
I would not run a FI Tech on any serious performance build. I think they are more designed for retrofits into classic cars. (FWIW I have a Fueltech)
Last edited by KCFormula; May 15, 2026 at 10:06 PM. Reason: Add info.