I am a new owner of a 2001 SP1, and looking for some insight on engine vibration, is it normal or is just my imagination? A little background, I purchase the bike about two weeks ago and the only time I rode, other than when I test drove it, was when I pick up the bike which was about an hour of drive time. The bike is stock, but the right exhaust had a dent and a few deep scratches so I found a pair online in almost perfect condition and replaced them and at the same time I replaced the oil with fully synt. When I took it out for a spin I notice substantial vibration when I accelerate it does not matter which gear or RPM is in as long as I am opening the throttle it vibrates from under the engine. So went home and put back the old exhaust and took it for a spin and still same vibration.
The bike starts right way, it idles perfect, no smoke,..there is no power loses, it drives fine other than the vibrationůSo my question is, is this type of vibration normal or is it just my imagination? Any input will be greatly appreciated.