Butterfly Exhaust Valve Issue (How to fix?)
So I have had my 2005 zx6r for almost 2 years now. I bought it used from a dealership which is an as is sale. The first year I didn't have any real issues but the second season I took it out it started to die on me randomly. I'd just be cruising along just fine and all the sudden the bike would just turn off. Later in the season last year it would do it more and more frequently. I took it to a shop and had them look at it which included 3 different 1 hour test rides to try and get it to turn off on them so they could help me diagnose the problem only to tell me they can't find any issues with the bike. They said the only code they pulled from it was a "butterfly exhaust valve code". Which they seemed to really just brush off and not even talk about really. I'm assuming this is due to the aftermarket yoshimura pipe it had installed before I purchased it. To my knowledge isn't there supposed to be a part that comes with that kit that solves this issue? Any help is appreciated as I'm pretty new to diagnosing issues on sports bikes.