Quote:
Originally Posted by kowalski
2) I went back to OFT Stage 1 93 octane tune. The car did not feel right with the custom tune shiv sent me. Though it was a 91 octane one. I did not dynoed the car, it might gain some ponies with the custom tune, but numbers that I can not feel are meaningless to me. With Stg 1 93 + headers the car has more "oomph" and feels more stable.[/U]
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This is interesting - I've got the same custom tune and also felt like the Stage 1 tune was more peppy on the street. But when I reviewed my data logs, turns out it was running fairly lean. There was also some FLKC at higher RPM's.
My theory is that the Stage 1 tune feels stronger because it's running leaner and making more low-end torque. But it's actually making less peak power because of the FLKC at higher RPM's.
My fuel trims are noticeably smaller with the custom tune so I went back to it. The AFR's are a bit rich though.