91, 93 & 100 Octane - Who's using what?
in regards to running race fuel on a stock tune are there any precautions needed or is it safe 100 or 109 ? i recently purchased my 997 turbo and it came with fabspeed intakes but the car feels faster than stock is there anyway besides a dyno test i can figure this out ?
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sdg1871
991 Turbo
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Dec 24, 2015 12:22 PM






