Hello how's everyone doing, I wanted to know if anyone knows where's a good tuning spot in Maryland who does good tuning ? I have agp stage 4 kit put on but this d#*@* knock light keep turning red and I think if it was tunned right I shouldn't see it as much the car also shut off twice so far and I baby my car first 5 speed had it for a year but haven't had a chance to get my stage 1 or 2 computer yet and the dealership want 6 an some change so what do you think it could be.

 

Assuming the S4 is completely installed. Are you running on the base map that was provided with your fuel controller ? How much boost are you running ? Did the problem start as soon as the install was performed ? Need more info.

 

the s4 kit comes with the sct now so you shouldn't need a stage kit. what is happening when the car turns off? are you throwing any cel's? if so, what are they? what's your boost level? injector duty cycle? give us all the info you can about the set up....