Well this definitely explains why my car runs so much better with 93 as opposed to 91 with it still being untuned. So 13 is considered okay running 93? I always see people shooting for 12.6-12.8. I'm running 13.5-13.8 untuned right now, and it's running better than I thought, but still not as good as it could be.
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Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction
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