1994 ecm question
Thread Starter
Teching In
Joined: May 2023
Posts: 19
Likes: 1
1994 ecm question I have a 1994 lt1 has ported heads and a cam and 30 lbs injectors. First question does it really need 30s ? Are 24s not enough? And how do I know if the computer has a tune ? Because it seems to load up as you slowly tap the throttle. Thanks
I had LPE heads/cam/LT headers/boltons making 370/355 to the wheels with 24lb injectors and I believe I was in the 90ish percent duty cycle. There is a formula out there, but I can't remember it off hand could probably find it by using google. As far as the PCM that's a tough one since it could have been tuned using HP tuners or whatever other software was available. I think there is still free tuning software available as long as you get an OBDI cable, laptop and software. I'd suggest just starting over. Find somewhere where you can get the PCM reflashed to stock and go from there.
Thread Starter
Teching In
Joined: May 2023
Posts: 19
Likes: 1
[QUOTE=SS RRR;20507713]I had LPE heads/cam/LT headers/boltons making 370/355 to the wheels with 24lb injectors and I believe I was in the 90ish percent duty cycle. There is a formula out there, but I can't remember it off hand could probably find it by using google. As far as the PCM that's a tough one since it could have been tuned using HP tuners or whatever other software was available. I think there is still free tuning software available as long as you get an OBDI cable, laptop and software. I'd suggest just starting over. Find somewhere where you can get the PCM reflashed to stock and go from there.[/QUOT
ok thanks so much. Can’t find anyone here where I am in Ontario 😕 I could do my own tune? Please tell me more 😊
ok thanks so much. Can’t find anyone here where I am in Ontario 😕 I could do my own tune? Please tell me more 😊
http://aldlcable.com/aldl.asp
I linked HP tuners first, but I don't see any software available for the LT1? I am also pretty sure there is free software available, but you need the data cable. Do a search on this forum for tuning software.
I linked HP tuners first, but I don't see any software available for the LT1? I am also pretty sure there is free software available, but you need the data cable. Do a search on this forum for tuning software.
Check ECMHACK for free tuning and scanning software. You will need the cable.
They have stock bins you could use to start your own tune or to compare to your current tune.
Tunercat is also availiable for a moderate amount.
They have stock bins you could use to start your own tune or to compare to your current tune.
Tunercat is also availiable for a moderate amount.
Thread Starter
Teching In
Joined: May 2023
Posts: 19
Likes: 1
[QUOTE=RGSS;20508339]Check ECMHACK for free tuning and scanning software. You will need the cable.
They have stock bins you could use to start your own tune or to compare to your current tune.
Tunercat is also availiable for a moderate amount.[/QUOTE
ok thanks 🙏
They have stock bins you could use to start your own tune or to compare to your current tune.
Tunercat is also availiable for a moderate amount.[/QUOTE
ok thanks 🙏
Thread Starter
Teching In
Joined: May 2023
Posts: 19
Likes: 1
ok more questions. Everything on that page is German to me lol. I know where the ecm is but bin files and such I am lost ??? Any advice help videos to watch ? Thanks guys
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo
TECH Fanatic
Joined: Nov 2007
Posts: 1,745
Likes: 18
From: Lansing, MI via Bowling Green, KY, Dalton GA, Nashville, TN & Atlanta, GA
There is some software called Scan94/95 that will read the PCM on 94s & 95s. The software is free. You would need a laptop or something and an ALDL cable. I can’t swear that it would provide the info you’re looking for. There is a lot of info on CamaroZ28.com.
Thread Starter
Teching In
Joined: May 2023
Posts: 19
Likes: 1
[QUOTE=BTC;20508827]There is some software called Scan94/95 that will read the PCM on 94s & 95s. The software is free. You would need a laptop or something and an ALDL cable. I can’t swear that it would provide the info you’re looking for. There is a lot of info on CamaroZ28.com.[/QUOTE
ok thanks
ok thanks
Scan94/95 is a good tool for high-level, at a glance 'is **** working' stuff. I found an open circuit on a PCM pin to the auto trans on a car a few years ago, wouldn't have spotted the issue without it. However, it wasn't written to be a tuning tool unto itself. Have a look here:
https://ls1tech.com/forums/lt1-lt4-m...-computer.html
and here:
https://ls1tech.com/forums/lt1-lt4-m...o-rt-94-a.html
https://ls1tech.com/forums/lt1-lt4-m...-computer.html
and here:
https://ls1tech.com/forums/lt1-lt4-m...o-rt-94-a.html
Thread Starter
Teching In
Joined: May 2023
Posts: 19
Likes: 1
Scan94/95 is a good tool for high-level, at a glance 'is **** working' stuff. I found an open circuit on a PCM pin to the auto trans on a car a few years ago, wouldn't have spotted the issue without it. However, it wasn't written to be a tuning tool unto itself. Have a look here:
https://ls1tech.com/forums/lt1-lt4-m...-computer.html
and here:
https://ls1tech.com/forums/lt1-lt4-m...o-rt-94-a.html
https://ls1tech.com/forums/lt1-lt4-m...-computer.html
and here:
https://ls1tech.com/forums/lt1-lt4-m...o-rt-94-a.html
TECH Fanatic
Joined: Nov 2007
Posts: 1,745
Likes: 18
From: Lansing, MI via Bowling Green, KY, Dalton GA, Nashville, TN & Atlanta, GA
Yes. Scan94/95 is not a tuning tool, but it's great for diagnostics, assuming you know how to interpret the info. There are a few people still around that can help with that.
Teching In
Joined: Jul 2023
Posts: 1
Likes: 0
For Tuning, you'll need to use TunerPro RT, it's free and has all the related definitions in the download section, but if you're going to try and do some tuning you really need to do a lot of reading, you can screw things up really fast.
The emchack site has loads of helpful info, along the scanning software and a program called Flashback, that will download/upload EMC data. Also, shbox.com has loads of good technical data and diagrams.
The emchack site has loads of helpful info, along the scanning software and a program called Flashback, that will download/upload EMC data. Also, shbox.com has loads of good technical data and diagrams.
Thread Starter
Teching In
Joined: May 2023
Posts: 19
Likes: 1
[QUOTE=Byteme;20512041]For Tuning, you'll need to use TunerPro RT, it's free and has all the related definitions in the download section, but if you're going to try and do some tuning you really need to do a lot of reading, you can screw things up really fast.
The emchack site has loads of helpful info, along the scanning software and a program called Flashback, that will download/upload EMC data. Also, shbox.com has loads of good technical data and diagrams.[/QUOT
ok I ll look it this.
The emchack site has loads of helpful info, along the scanning software and a program called Flashback, that will download/upload EMC data. Also, shbox.com has loads of good technical data and diagrams.[/QUOT
ok I ll look it this.
Thread Starter
Teching In
Joined: May 2023
Posts: 19
Likes: 1
[QUOTE=Byteme;20512041]For Tuning, you'll need to use TunerPro RT, it's free and has all the related definitions in the download section, but if you're going to try and do some tuning you really need to do a lot of reading, you can screw things up really fast.
The emchack site has loads of helpful info, along the scanning software and a program called Flashback, that will download/upload EMC data. Also, shbox.com has loads of good technical data and diagrams.[/QUOTE
basically how do i know if the computer is still stock ? Not had a tune ?
The emchack site has loads of helpful info, along the scanning software and a program called Flashback, that will download/upload EMC data. Also, shbox.com has loads of good technical data and diagrams.[/QUOTE
basically how do i know if the computer is still stock ? Not had a tune ?