Join Date: Sep 2001
Location: Aurora, CO USA 80013
Yes, in order to get any kind of performance gain from a pipe, especially on a carbuereted bike like yours, a jet kit is absolutely essential. Doesn't really matter what "stage"- that's just a bunch of marketing hype. Just get a kit with enough needles and jets to get the job done. I'm assuming that you're going to have a professional mechanic do the jetting for you.
Properly jetted with the pipe, your bike could see a 5-6 rear wheel horsepower gain and perhaps about 2 ft/lbs of torque.
"Fat, drunk, and stupid is no way to go through life son." - Vernon Wormer.- Dean, Faber College.