new parts need prom upgrade?
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Joined: Sep 2003
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From: St. Louis, Missouri
Car: 1989 Firebird Formula
Engine: 383 Stealth Ram
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi
new parts need prom upgrade?
Hi Everyone,
I recently finished rebuilding my 89 TPI 350. I upped the compression ration to about 10.2:1 and added a 2500rpm stall. However, the car seemed to have more response before the rebuild. So, I was wondering if I need to have my custom TPIS prom changed? Maybe the reason it is less responsive is the ECU isn't adjusting for the new upgrades?
Any info would be appreciated.
Thanks!
I recently finished rebuilding my 89 TPI 350. I upped the compression ration to about 10.2:1 and added a 2500rpm stall. However, the car seemed to have more response before the rebuild. So, I was wondering if I need to have my custom TPIS prom changed? Maybe the reason it is less responsive is the ECU isn't adjusting for the new upgrades?
Any info would be appreciated.
Thanks!
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