Hi Guys, I am very new to this site, and new to having a cx500 1978. The CX500 I had got hold of was very worse for wear so we have taken the best bits and I’m currently in the process of using it in a tuk tuk. ( reason explained at the bottom) I really could do with some help, and apologies...

Exhaust system cat remove. Would this do anything to the back-compression of the bike. The engine is standard except for the Harley Davidson exhaust. I have a 1981 Cx500.