Where to start , right been running stage 1 shark for around 4 months no problems at all then added the Amd cai kit and a week later i get the emissions light on !!!!!! Flashed the ecu back to standard as didnt want to be putting added stress on any parts
So called audi assist the boy plugged in his computer and said it was running lean and recommended an hpfp so ordered one and fitted it this week along with a cam follower since i was removing the pump anyway and then flashed back to stage 1 after going for a test drive and then checking everything was fine , so all was good pulling like a train and running fine then emissions light comes on again arggghhhh.
Now was wandering if anyone had any ideas what could be causing it ???
Could it be that the car was mapped when standard and now having added the hpfp and cai be causing the map to run lean and need adjusted to suit the mods added ?????
Any help suggestions appreciated