Just wondering if anyone has any experience with these Power Commander's. I know when you change out the pipes on a bike you should probably do it, but I had the tech at the dealership say mine was running to lean with the new pipe;some throttle hesitation, and would need one.?. Could running to lean really hurt the engine in the long run; especially being metric or should I take the advise and get a power commander for ol-girl($315 )?? Any input on this is greatly appreciated.. ???