I am having a problem with my '00 CSVT that I am completely baffeled about. It started all of a sudden about 2-3 weeks ago, and continues to do so. When I am at WOT in 1st or second, the car starts bucking around 5000rpm. I can run the car to redline if not at WOT though. It did not seem to do anything bizarre in 3rd, but speed limits prevent a true test. The car is not modded at all, other than an optomized TB. Has anyone had similar problems, or know what could be causing this?