I bought a chipped ecu from the following website http://www.gtquattro.com/GTQKITS.html NEW** MAC-14 – GTQ Super Chip
and my car is now stumbling, not accelerating, idles rough, and stalls. The guys sent me a stock chip to try and it still does the same thing, so he then sent me another chipped ecu and it still does the same thing. The car runs well with my stock ECU. I have tried to pull the codes and done get any, only the 4 link sequence over and over again, I have tried with each ecu and each chip, and still no codes. Any suggestions



Only problem I have is it starts a bit hard when not warm once warm it starts quick. Any suggestions for this?