Some rare sunshine in Surrey today so I took out my bike to try out the new Cobra slip ons that I fitted. sounds great until I slow down then I get a lot of popping and farting which don't sound so good. Anyone got any ideas? I was led to believe I could fit these with no problem but doesn't seem the case.

Some rare sunshine in Surrey today so I took out my bike to try out the new Cobra slip ons that I fitted. sounds great until I slow down then I get a lot of popping and farting which don't sound so good. Anyone got any ideas? I was led to believe I could fit these with no problem but doesn't seem the case.

Probably the air injection system putting extra air into the exhausts. Find the pipe from the airbox that feeds it and block it off.

Moved to the workshop section as it is a workshop question. Simples.