How to tune a '92
Thread Starter
Racer
Joined: May 2012
Posts: 363
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From: Peabody MA
How to tune a '92
Right now my car is completely stock. I'm getting EM longtubes on there pretty soon though, and I'll be getting rid of the cats, AIR, and probably EGR as well. I was thinking of just having pcmforless send me a chip, but for future mods I'd like to learn to tune my own car. Is that possible with the '92 computer or will I need a '93 and up PCM?
Note: don't need to pass emissions
TIA,
Vinnie
Note: don't need to pass emissions
TIA,
Vinnie
Thread Starter
Racer
Joined: May 2012
Posts: 363
Likes: 0
From: Peabody MA
Burning Brakes
Joined: Mar 1999
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From: Mooresville NC
Pro
Joined: May 2008
Posts: 670
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Here is a link to a very good tutorial that will help get you started; http://ltxtech.com/forums/showthread...RT-V5-Tutorial
Both the 92 and 93 are speed density fuel injection, 94 and on up is Mass airflow, very different in the way the computer works. 92 & 93 cars use VE tables to adjust the fueling while the newer models use the VE tables as a form of back up and read from actual air flow from the MAF. You should be fine with the stock tune and your new headers, it can learn to a certain extent changes like that. If you end up removing the AIR and the EGR then you can switch those off by moving their rpm function way up to 7000rpm so they in effect never come on.
Both the 92 and 93 are speed density fuel injection, 94 and on up is Mass airflow, very different in the way the computer works. 92 & 93 cars use VE tables to adjust the fueling while the newer models use the VE tables as a form of back up and read from actual air flow from the MAF. You should be fine with the stock tune and your new headers, it can learn to a certain extent changes like that. If you end up removing the AIR and the EGR then you can switch those off by moving their rpm function way up to 7000rpm so they in effect never come on.
Thread Starter
Racer
Joined: May 2012
Posts: 363
Likes: 0
From: Peabody MA
I do plan on removing all emissions stuff, thats why i thought i would a tune. I dont want the check engine light coming on obviously. I figure i could squeeze out a few extra hp with a tune as well, if i do it right
