Hey E-SHAFT, here is the post I was refering to in an earlier post https://www.rx7club.com/vforums/show...threadid=13266 be sure to read the whole thing. I thought it was the anti afterburn valve, a part of the acv, but was straightened out by Irv, Keith's ole man, that it was the switching solenoid and the swithching valve that is a part of the acv.