Halloooo everyone! my 04 with 113k miles recently started acting up. When I'm reving past 4k rpms "sometimes" when it reaches 4500-5000 it'll hesitate almost as if theres a misfire. Also feels like the car goes into limp mode for a second and then goes back to normal and rpms continue to climb. I have MD ART pipes, TDX2, 5/16 spacer and CAI but no tune.. My guesses are that I either have an ignition coil going bad or maybe a cam sensor? I want to add that the only code that comes up when I scan the car is a P1283 which has been there for almost a year since I installed the exhaust. Imputs anyone?

 

Ive been dealing with thus issue for a year almost. Two mechanics and lots of money later and the misfire is still there. I swapped knock sensor and harness. I gapped my spark plugs and changed all 6 coils and the problem got like 90% fixed but still hesitates bad under sudden acceleration.