Quote:
Originally Posted by Pro Stock John
Interesting update, thanks for posting.
The only change you made since the 12.19 best ET was lowering the car right? Was the air equivalent, or cooler? Were you spinning on the 1.7's or dead hooking?
Edit: I watched the vid, motor didn't sound too great at the top of 1st and going into 2nd, was that where you got the most knock? Did it short shift too?
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I also noticed the decline in power in the middle of the runs. It pretty much went KR from 4800-5600. I had discovered that on previous runs and taken out timing - that's how I got the 12.191, increasing timing before peak torque, dropping it, then back up a little at redline. But this was with the dyno tune, which did not pull any timing.
Anyway, the changes since the 12.191 are: 3.45 gears, lowering, sway bars (F&R), underdrive pulley.
Technically I should be runnuing faster. However, going with the shorter gears (3.45's) may decrease the MPH.
That said, looking closely at the logs, two things were happening:
1) IAT's at the beginning of the run were 140*. Bad. They didn't drop to ambient+10* until halfway through the run. Bad. It could be heatsoak of the sensor, or I'm pulling in engine air. I'm going to look into that this week.
2) Pulling timing at peak torque. This is easily fixed. I just didn't have time to do it at the track the other night.
I may, however, go back out Friday night with the adjustments. And maybe with the EWP installed.
So maybe one more shot at 11's, then it's cam.
Should be fun.
Padre