ok i recently had my car dynoed at my local shop and above 4,500 RPMS it has a noticable missfire. even when i take it to the track i can feel it start to break up at higher rpms, but when i drive below 4,500 everything is fine. i have a full exhaust, cold air,a shifter, and some suspension parts and i am only running 14.1's and trapping 103. i put down 276 HP and 323 TQ. i just bought a new set of plugs and wires hoping that will fix it. i really hope like hell it isnt the opti but i was wonering if anyone else had this problem and fixed it?

 

change the plugs man! mine eats them like no other especially after the dyno was when mine ate one i couldnt fig out what one so i changed em all and she was good to go. mine had 480fwhp what did you have?

 

i just did the plugs and wires but its worse now because i routed two plugs to close to my headers. and those numbers i mentioned are at the wheels not the flywheel

 

switch over to the ltcc coil conversion setup mine ran wayyy better i run the ngk tr55's gapped at .055