You make a very good point and my thinking was kind of narrow. I am running a 790 with the 790 cams and no cat and basing my results and statements on that. I actually don't know enough about the 865 to speak as to how the cross over removal would effect them. Your intake and exhaust will effect the outcome as well. I can really only speak for my set up on my size engine and cam timing/duration. Wendy's 790 with gutted slash cut exhaust showed no change mine with cannons a slight increase. Again given a small margine for error no change to either. I would do it again that is for sure, I am not running a race bike and even if I had a small loss in power I like the sound.

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