I sent an email also. after installing the supercharger the 39 injector tune I have a P0321 code car will turn over and fire but stumbles and dies. Also there is a clicking or knocking that seems to be coming from the throttle body motor that last 2-3 second after ignition key is powered on. This is also with 2 different TB and motors. I tried the old 48 injector tune but have the same results...that did run with the old GT500 throttle body installed with the DOB supercharger. I now have an oem GT throttle body. I pulled both TB motor and throttle position wires out of the loom and everything still looks good with the solder and heat shrink. Same extension used with the DOB supercharger.