Quick question:
so i know (form reading here) that longer pipes help with top end power while short pipes help with low end power and that stock exhaust typically yield the best performance.
when we're talking about pipe length are we including the muffler? or just the header pipe up until the muffler is attached?
I have a stock system, but i'd like to either angle the muffler up a bit, or get a shorter muffler, but i don't want to mess with the performance (happy with how it is)