First off, I'm new to the forums. I just got my first harley 08' nightster and I HATE the stock exhaust. My buddy can weld and gave me the idea of taking of my slip ons and welding on pipes from their. I've read about doing the remap and such but from what I can tell won't create much of a problem. What I'm more worried about is the back pressure and keeping the motor cool. Would welding in a large washer inside create good back pressure or is this whole idea not a good idea?
