2.73's or 3.23s' or tune
08-12-2007, 11:42 PM
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2.73's or 3.23s' or tune A while ago I got a PCMforless tune. The car feels like it holds shifts too long now. I am wondering if I got tuned for 3.23's when I actually have 2.73's or vice a versa. When at highway speed the car is at 2000rpm at 70mph, however the car is a gu2 RPO code and I told them 2.73 rear dif because of this. The car was slightly modified when I purchased it and I have not had the rear diff off. The 10bolt says "gm" on it (I was under yesterday fixing exhaust situation). What would you guys think / do?
Thanks,
Matt
Thanks,
Matt
08-13-2007, 02:21 AM
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Shifts too long to me means that the car feels like it stops pulling as hard as it was. That is to say, at like 3500 rpm I am in my seat, at 5500 rpm, I feel like the car is not pulling. The sticky says that 70mph at 2k rpm = 3.23. I am just unsure as to why this would be happening. At all other speeds the car feels like it is shifting fine / on time. The car is not hitting the limiter, the tranny is not slipping, just changed all the fluids/ fuel filter. It just seems that it should shift, and isnt. I hope that makes sense.
