You will lose some hp... I have a Rumble pack on mine and I can only pull 7700 RPM on the topend with it... thought it may have been my clutching changes that did it, but I put my stock can back on to test and can pull 8100 RPM with it. Although I love the sound... I'm not sure if it's going back on.
Is that for me Triple? I wouldn't say its bogging at the high RPM... just doesn't seem to have the grunt to pull those RPM's.
It eventually does after it rolls out past 80mph it will slowly creep up to 7900. I may be able to get rid of this by jetting but I'm not sure. I did a high speed run and shut the sled off and checked the plugs for lean condition. It actually still looked a wee bit rich. I haven't played with it any more as of yet.
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