I am trying to decide on whether going with a a555 or a523 in my daytona. It will be running a s60 turbo at 15ish psi. I guess I am wondering about your experiences with both, will the car be a bit faster with the gearing of the a555?
I do ALOT of highway driving so thats why I am kinda leaning towards the a523, but the a555 is supposed to be a lot stronger.
thanks