after 2 years of running perfect i went to the track for the first time with stroker and billit tranny and launched on 0 boost and when i get to the shift point it bangs back and forth hard 5 or 6 times then shifts then shutters down the track. i had a 1.8 60 foot and left off twice and got a 11.66 at 117 with 20 psi. on a te60. my car shifts soft cruising into second and third takes forever to shift. power logger file here