The PAIR has no effect what-so-ever on engine performance. none. zero. zilch. nadda. zippo. I'm curious, if you put it back on did the issue go away?Jsvob03 said:fyi. you may read that removing the hoses from your valve covers will stop the popping. it did for me. but made the bike run like a dog (when cold, and at idle). don't do it.
^^^ Like he said, find the hole(s) in your exhaust, seal 'em up.