Thanks! Im relieved.
Me too!
The whole problem was of course the throttle body. I knew something wasn't right from the very beginning but I was told all my concerns were unfounded. Long story short, the brass adjustment screw that KB absolutely prohibits you from touching was not adjusted correctly to begin with. It wasn't allowing enough air to the engine hence the stalling after 3 seconds and soaked spark plugs. I finally decided to say the heck with voiding the TB warranty so I cracked the brass screw loose and starting doing some voltage output testing between the stock TB and the Kenne Bell. The KB TB wasn't out by a mile, but the voltage outputs to the PCM were off from stock about .225 volts which had the PCM dumping too much fuel and not opening the throttle body for enough air. So basically the whole headache was a misadjusted TB that KB demands come perfectly set from the factory. Well....not in my case. KB used to have several versions of the 75mm TB. But now they are down to one size fits all which was actually engineered for the later model GT500s and insist it works fine on previous model years.
What a damn nightmare it was trying to figure out the problem. Jon Lund did everything he could but knew in the end it wasn't the tuning and so did I so I just brainstormed all night eliminating things as well as listening to the little voice that kept saying it was the TB. So here we are and I'm proud of myself that I was able to solve the problem when nobody, not even KB could give me and answer.
