I have a 2008 M109R. It has Vance and Hines big shots on it when I bought it with a fuelpak fuel processor already installed. Also factory air filters.... Well, I've recently rebuilt the whole thing pretty much, and I have K&N air filters with freedom performance racing exhaust. It's running very rich and backfires on the deceleration with flames. Lol. I'm going to attach what Vance and Hines emailed me earlier today. I don't understand what I'm looking at to be honest. I've always used power commanders and have it tuned on a dyno. So ANY help would be greatly appreciated!
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