Lt1 tuning?
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Junior Member
Joined: Jul 2018
Posts: 35
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From: Louisiana
Car: 1988 camaro
Engine: 5.7 Tpi
Transmission: Manual
Axle/Gears: 3.42?
Lt1 tuning?
I have a 1996 Camaro lt1 that has a 383 in it. Into running pig rich! Anybody have any good recommendations on what I need to tune it? I'm a DIYer so what do I need as far a cable and software goes?
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: Lt1 tuning?
Being a 96 its obd2. You will need jet dst software
or
find a 94-95 pcm and swap it in. It should be direct plug n play. Rewire the aldl port with a obd1 unit. You can get a cable from moates.net. Download tunerpro rt and find the $EE related files
then you need a copy of winflash from tunercats.
http://www.tunercat.com/winflash_des...lash_desc.html
20$
or
find a 94-95 pcm and swap it in. It should be direct plug n play. Rewire the aldl port with a obd1 unit. You can get a cable from moates.net. Download tunerpro rt and find the $EE related files
then you need a copy of winflash from tunercats.
http://www.tunercat.com/winflash_des...lash_desc.html
20$
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Posts: 19,660
Likes: 311
Re: Lt1 tuning?
I don't think it's quite direct P-&-P. I have a '94 and a '96 LT1. The Optis are different, the auto trans is different if you're using that, and there are a few other differences. I'm guessing the differences could all be worked out and/or wired around, then programmed accordingly before flash, but haven't done it myself.
I would opt for the OBD2 software.
I would opt for the OBD2 software.
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: Lt1 tuning?
From all that i read it works really well and only major change is use a 94-95 knock sensor for the 94-95 pcm. There may be other things but if you have a 96/97 lt1 and harness, the 94-95 pcm can run it with a 94-95 knock sensor. Thats the only change i see.
Member
Joined: Aug 2010
Posts: 478
Likes: 4
From: Las Vegas
Car: Fourth Gen '94 camaro
Engine: 350 Gen II
Transmission: A4
Axle/Gears: 3.23
Re: Lt1 tuning?
Yes that is my understanding also. Many owners got away from using the downstream of the cat O2 sensors by using the early PCM - less emissions worries and easier to tune. The early 4L60E uses something different though and I can't recall what it is right now. I'll try and look that up and post later.
The JET/DTS software for '96-'97 LT1 is pretty expensive.
The JET/DTS software for '96-'97 LT1 is pretty expensive.
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Joined: Jan 2000
Posts: 19,660
Likes: 311
Re: Lt1 tuning?
Shift solenoid resistances varied about every year from the early '90s to '98, when they somewhat unified. The pressure control and TCC lockup schemes are different in some of those years, too. .
Member
Joined: Aug 2010
Posts: 478
Likes: 4
From: Las Vegas
Car: Fourth Gen '94 camaro
Engine: 350 Gen II
Transmission: A4
Axle/Gears: 3.23
Re: Lt1 tuning?
Yes, that's it. The '95 and later transmission used pulse width modulation PWM AND THE '94 4L60E doesn't. Sorry but I don't the fix for that or if there is one other than replace the transmission.
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Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: Lt1 tuning?
The 94-95 pcm are exact same so only difference would be the tune file. They both are $EE so I realy dont think the trans is an issue if you wanted to use a different ecm. Just flash the correct tune.
harness wise i dont know it may be different. Have to look at diagrams but regardless this is irrelevant to the op question
harness wise i dont know it may be different. Have to look at diagrams but regardless this is irrelevant to the op question
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