I was thinking about purchasing a can-am ds450, but after test riding a leftover '08 model, I have some questions. First, I am getting conflicting answers on the technical updates made to the '09 and '10 models from the first '08 model (f.i. mapping,clutch,cases,etc.). Also, I noticed during the test ride a hesitation at part throttle that the dealer couldn't explain. Last, I was wondering if the available free x-team racer performance kit is worth losing the 6 mo. warranty and what is the difference between the included race ecm and the stock ecm. Thanks.