Quote:
Originally Posted by ike84
Hey woody, question for ya. I've been running now for a few hundred miles on this setup with 996 tune and big exhaust and I noticed that the car now likes to move! More specifically, around 4200 rpm at WOT she pushes me back in the seat, which I don't ever remember happening before. Weirdly though, it doesn't happen every time I pass 4200rom at wot. I can't quite pinpoint what is contributing to this happening (or not happening). I'm wondering if maybe the DME is still figuring stuff out.
I know most of your driving is dirt track, but I'm curious about what your experience has been so far? Big gains at high rpm? Are gains always there?
Btw, how's the shop build going?
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Ike
I have experienced the same as you in regards to the torque curve around 4200 RPM under WOT or near WOT.
Every now and then it is like there is a little more power.
My car is a 2000S completely stock.
I thought that perhaps my MAF was going bad.
Or that my resonance flapper was hanging up.
But everything checks out ok.
The car runs great.
The only thing I could come up with is:
I can only get 91 Octane fuel.
So my thought is that the DME/ECU is holding back ignition timing to prevent pre-det or knock.
I think when I feel the little bit of extra power is when the ECU/DME is allowing a little more ignition advance.
Keeping my eyes open for some higher octane fuel to test my theory.
Thoughts????