Quote:
Originally Posted by PERRIN_Jeff
Ben,
Glad you are super happy!
During all our testing. we played with super lean, super rich and found that there was ZERO HP gained from going to 11.5 to 12.5 or even 13.5. The DI engine is super efficient and that is my guess as to why it makes no difference or at least not enough to make the car run hotter or closer to the edge detonation. Just so everyone knows, our tunes are set for a true 12.0 -11.7 AFR reading. Keep in mind that probes in the tail pipe can read leaner versus in the header.
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Thanks for that Jeff
I assumed you would have tried a fairly big range of AFR's, just thought I'd check.