well ive had the system since stock turbo and on 18 lbs falling off to 15 with 91 oct. it was around 6KR, since then i have found a gas station with 93 oct i use that now but its probably the same shitty 91 cause, when i was in florida with the car this past month i had no knock on my 60-1.
im going to be getting some race gas soon so i can rule out it maybe being audible knock.
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