I'm just wondering if the ecm controls the transmission (700R4 with mods). The reason I ask is that with new heads and cam the car is now finding "neutral" in overdrive. I have to manually drop into D let it catch and then upshift again.I did have the tranny rebuilt in Jan of this year to handle the power increase. I was wondering if I should mention that to Ed Wright when I order a custom chip tomorrow. Thanks for your advice/help.

The PROM only controls TCC lockup ... not shift points or actually gear. I would post this question on the Transmission board because I don't believe that it is related to the Custom PROM.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.587 @ 107.97mph (1.710 60ftr) on the long runner setup.
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels. Stock Wheels. No Weight Reduction.
Gunning for NA 11's with the MiniRam II and Hooker LT Headers.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org