Have a 99 vet with A4. I have installed a 3.73 gears and a Yank SS3800 converter. The problem I have is I cannot get it to shift on wide open throttle. Snap On scan tool says that computer is not telling selonoids to work. I have set tranny shift mph and rpm low and high with HP Tuner but still cannot get it to shift. It will shift fine just driving around town. It will shift manually from first to second but will not shift to third. This thing will always hit the rev limiter and will not shift. It will shift at about 3/4 throttle though. Any ideas on what to do is driving me crazy.