Gadsdenbrigade

I have a 2000 Camaro z28. I used the Diablo Predator to check my long fuel trim and it was 25% over. I then changed the injector slope to -26 to compensate for the difference. From a stand still, and general driving, the acceleration and power improved. However, if I am rolling along and "floor" the accelerator (as if to pass another car) the RPMs shoot up to 6000-6500 for a few seconds with no change in acceleration(like I put it in neutral); then it feels like it slowly engages and I speed-up. It feels and sounds exactly the same as when you stomp it from a stopped position and you have to wait for the tires to stop spinning and catch traction to go forward, but the tires aren't spinning. (Which having the power to break traction at 65mph would be nice I must admit...lol) Does anyone know what caused this or how to fix it? I theorized that maybe it was too rich at WOT since the change and I should lean it for WOT but the car does fine with WOT from a standstill... kinda just guessing now.

Thanks in advance,
Jason

blacksnake

It sounds like your trans is slipping. Not necessarily related to your tuning. 26 seems pretty high on the injector slope.

Gadsdenbrigade

I agree 26 does seem high, but I ran the test twice over 60 miles and it read 25% both times. After i adjusted it I ran it again and it stays around -1/+1. If it is the trans, it only slips during a rolling WOT.

Frost

iTrader: (45)

Sounds like tuning around a bad MAF...

Gadsdenbrigade

I cleaned my MAF sensor and took a quick read out.
At Idle: -10.56% LTFT and 6-7q/s MAF
At 55 mph: -9.00% LTFT and 12-13q/s MAF
WOT from 55 mph(where I experience the high rpms): O% LTFT and 100q/s!!
Does this help any?

06MonteSS

he had a hole/leak in his exhaust, which was throwing everything out of whack...

see here:

http://diablosport.com/index.php?nam...wtopic&t=14697



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