If you get rid of the stock muffler and mid chamber (its not the catalytic converter)..and replace with a light weight slip on ..you lose about 15 to 16 lbs..you won't pick up any hp..maybe with an ECU flash you will pick up some. Replacing the headers as well , with an ECU flash will pick up some HP and smooth out throttle response. A full system with ECU flash will provide the most HP gain.
I did mine to lose weight..these bikes have plenty of HP..at least for me. When I feel the need I will go with either a full exhaust or just add the Graves headers and a flash.
Appreciate the feedback! I’m definitely not looking for more power any time soon, the bike is definitely fast Lol!, considering I weigh (155) 😂 just looking for a nicer exhaust and remove some weight off of it. The m4 and the graves definitely look nice, appreciate it yall, this my first sport bike and it’s definitely been an experience so far, I love the 2020 Orange, it grew on to me for sure!