I live in a state where 93 Octane is readily available at almost every pump.
A person I know with a Q60 says he is able to run 21 PSI on 93, but he has a fairly newer model, so I am not trusting his experience.
Can someone who has put a few thousand miles on 93 tell me what your max SAFE PSI is...
Getting ready to tune my q50 red sport but not sure whether To go with E85 or 93 octane . I know with E85 your gonna get better numbers and performance but I’m hearing a lot of people having trouble with the injectors failing both stock and aftermarket .... any thoughts or input on this ??