i have apr stage 2+ (apr injectors). they were throwing lean codes and apr replaced the injectors and reflashed my ecu. everything was runing great for about 2 weeks and now this came about. i am so pissed. i depend on my car ever day due to the line of work i am and i can not have this crap going down. i hope apr can fix it. i think they are a great company and i would like to go stage3+ but if i am having problems like this i am a little worried. well see

the car is an 04

16684 P0300 168

Random/Multiple Cylinder: Misfire Detected [Sporadic]



16687 P0303 168

Cylinder 3: Misfire Detected [Sporadic]



16891 P0507 033

Idle Air Control System: RPM Higher than Expected [Sporadic]

could be your coil packs giving up, its common enough.