I've searched, no info.

Here is my question: I have hesiation and bucking between 1500 to 3200 rpm. It's the EGR/BPT tube issue. The article is at http://www.se-r.net/car_info/problems/index.html#Surge%20and%20hesitation.

Well I followed the instructions and still have the hesitation and bucking. When I disconnected the vaccum to the BPT valve. Go for a test drive, the hesitation and bucking are gone. I'm trying to get this vehicle smooged (california), so question is, What will happen to the reilability of the motor by disconnecting BPT valve? Any answers?

I don't know of any reliability issues for the motor...emissions is the only thing i can think of. In good ol' virginia, i dont have any of that junk...EGR/BPT, or AIV...ahh yeah life is good. :D

you don't need it