Mike Corbett

2022 hisun 750 sector Hot exhaust I am new to the Hisun products. Like any other product, I see things I would change. I am doing the same fabrication on my exhaust pipe as you have done. When the tip is removed (with 5 screws) it is possible to look inside and see the port from the cat converter onto the muffler chamber is the same 3/4 or 1". It is the same unit as the 550. It is too small an opening. Tooooo much restriction. I hope to find some satisfaction with this mod. I'm still under 100 miles and looking forward to having a decent running machine sorting out the issues. Mike C.