I am just curious. Can you piggyback an aftermarket ECU? I have a Skunk2 ECU that came with the car (not just a chipped ebay ECU or anything. ECU is from Skunk2). My car is running really rich right now and I just ordered a P72 ECU to put in there, but if I wanted to could I override the Skunk2 with a vafc? Right now my vtec engages at 6000 rpm...This post probably makes no sense because I am half asleep but trying to answer the questions I have. Thanks again.