Originally Posted by MrRoboto
Shiv had tuned the 335is with Proceed and the end result is the same as the standard 335i.
OK now that I understand what you were saying, Yes both a Shiv, Dinan ect tuned N54 of any type be it the is, 135i, 335i etc will all end up at the same upper end point. I agree.
I read in your original post that a tuned 335i is the same as a Standard, as in non tuned 335i.
But a 135i, 335i etc doesn't have the M tuned lightweight suspension wider track, bigger brakes etc that the 1M does.