Sometimes I hate making changes that you don't think should affect anything and it does.
Had the gutted 2008 stock header with a right side only Scorpion slip on that dynoed out at 175 and healthy down low and the upper rpm's. Got a hell of a price on a Leo Vince full stainless and carbon can and got it. Did the install and the bike runs good except dead on the very bottom. With the old system it was a 2500 launch and hold on and now 2500 and it almost dies but runs great other than that.
Guess it goes back on the dyno but sure did not believe that another full exhaust would make that much difference