hey been reading around and thought i would post up and see what you guys thought... about 3-4k miles ago i changed the trans fluid and filter and refilled with with valvoline dex 6 full synthetic. at the time think i had about 55,000miles on the clicker... Every thing has ran fine with the exception on when i raced at the track like a few weeks later it would act funny shifting early and sloppy into second with the traction control off... with the tcs on it ran fine... well recently within the last week i noticed that wot in first was solid till it shifted it would "slip into" second. same feeling as if you were to "feather a clutch" every other gear works fine... and it only seems to be at wot. i baby her now to prevent any further damage and ordered a shift kit hopein to get a more aggressive shift but i am now lookin around and it might be this "boost valve" and was wondering how common is it to be bad.. and can it be replaced with the trans in car and what materials/tools would be involved... with my quick poking around haven't had too many hits on the search but going to continue looking... any input would greatly help thanks guys!