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EFI Tuning · 11-15-2016, 09:03 AM

The ECM is centered around a stoich of 14.11 which is E10. Regardless... you want the knock resistance of 93 over 91 if you can get it. 93 won't make more power... it will just help not give some of it up to KR.

11-15-2016, 09:03 AM	#5
EFI Tuning Drives: 2016 Camaro SS Join Date: Oct 2016 Location: Mount Dora, FL Posts: 792	The ECM is centered around a stoich of 14.11 which is E10. Regardless... you want the knock resistance of 93 over 91 if you can get it. 93 won't make more power... it will just help not give some of it up to KR.