Should I re-program the PCM???
Thread Starter
Hoon
Joined: May 2000
Posts: 717
Likes: 753
From: Krypton
Should I re-program the PCM???
I finally got the 96 GS back together. It starts, idles, and runs pretty good as far as I can tell. It is definately stronger than stock.
The engine mods are; Accel 300+, MSD wires, open-lid, K&N, Holley 52mm TB, ported intake, ported LT4 heads, GMPP hot cam, Hooker shorties, flowmaster cat back.
The question is: do I need to have the PCM re-programmed?
If it will get me even more power then I have no problem doing it, but, it is running very good now. Of course I could be wrong, since I have not driven the car in over a year. The only issue that I have noted is the exhaust has a slight rotten egg smell. I have heard this can be caused by running lean.
There are currently no DTC's being set or any other PCM problems. Any advice would be appreciated.
The engine mods are; Accel 300+, MSD wires, open-lid, K&N, Holley 52mm TB, ported intake, ported LT4 heads, GMPP hot cam, Hooker shorties, flowmaster cat back.
The question is: do I need to have the PCM re-programmed?
If it will get me even more power then I have no problem doing it, but, it is running very good now. Of course I could be wrong, since I have not driven the car in over a year. The only issue that I have noted is the exhaust has a slight rotten egg smell. I have heard this can be caused by running lean.
There are currently no DTC's being set or any other PCM problems. Any advice would be appreciated.
Le Mans Master
Joined: Jul 2001
Posts: 8,183
Likes: 3
From: Santa Maria, CA
Re: Should I re-program the PCM??? (gsvette)
Did ya do any major changes such as cam or drastic cylinder compression ratios an such and such? If not, more than likely you're ok. Can ya borrow a programmer? Data logging to get a better idea of what the motor is actually doing would be nice.
Rotten eggs sounds like bad cats.
Rotten eggs sounds like bad cats.
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: Should I re-program the PCM??? (gsvette)
GS,
I had Brian reprogram my LT4's PCM for my gears/fans/tuning. While I was there, I watched him tack on 12RWHP to a 95 LT1 with LT4 HOT cam (dyno tuning at Speed Inc). I'd give him a call, he's in the Chicago subarbs.
Brian Vorpahl http://www.BVPerformance.com
708-839-4705
Eric
[Modified by silver & red CE, 4:13 PM 4/16/2002]
I had Brian reprogram my LT4's PCM for my gears/fans/tuning. While I was there, I watched him tack on 12RWHP to a 95 LT1 with LT4 HOT cam (dyno tuning at Speed Inc). I'd give him a call, he's in the Chicago subarbs.
Brian Vorpahl http://www.BVPerformance.com
708-839-4705
Eric
[Modified by silver & red CE, 4:13 PM 4/16/2002]
