I agree tranny cooler is a mustStSupDog said:veilsidett and 2bad4u,
Rsa Supra was right about the timming but, All you need to do to save your tranny is install a tranny cooler and if you know of a good tranny shop have them do the valve body and up the pressure (if not the tranny cooler will enough for BPU)
Toyota built the traction control system into the transmission's operation for a reason. It just can't handle the power of a WOT shift. And when you start turning up the power, you'll start to blow the tranny.kapi said:What effect it has on the transmission.... I am sure its not helping prolong its life [;-)]
I had my 98 auto BPU'ed running 1.3kg on daily basis for at least 40k miles so far without any issues just for reference.
98 TT auto BPU+