Ideal AFR for a stock turbo supra...

LordLo

New Member
Jun 20, 2006
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Oh finally go some datalogging done today.

3,000-5,500 rpms AFR- 14.3
5,500-redline AFR-10.5

What is an ideal AFR? I remember it was mentioned once... I believe it may have been 11.5 or so, but my supra stinks at 11-12 AFR.

Would 12.5 or even 13 be a better AFR?