I just picked up a dpr test connection from TT to do my 16v and man what a difference that made. I am wondering though if the same pig tail can be used on the 8v cars as well. My wife has an 89 cabby and my buddy has a 85 8v rocco. Both could use some air/fule adjustments and I was wondering if I can use the same mothod on their cars. If not, how does one go about adjusting that on the JH motors? William