It could be running dangerously lean at start-up! Why you ask? Because the stock ECU fuel maps are programmed for x amount of air at idle and below RPMs when IMRC isn't actuated. However, you are now starting the car with xx (twice as much) air as it is programmed for. This will lean out the mixture quite a bit and could cause some damage if that is what the CEL is for. Get an AutoTap or ODB-II scan tool before doing anything like this again. Without these tools, guessing at what causes a CEL is about as accurate as finding a needle in a haystack.
