I’m running arrow headers / decat, Remus Ti slip on can, servo eliminator, power commander, modified k&n and had it fully dyno setup.
The change was impressive! Crisper throttle, rev’s cleaner and the power is throughout the range now. Fuel wise, I still do 200-220miles on a tank even with spirited touring and without the baffle it sounds immense especially with a little overrun gargle and pop.
Without a doubt the best thing I did. Loads lighter too.