Okay so I just got my srt6 finished new crank position sensor (old one went bad last week) then got the needswings supercooler, 178 crank pulley, and eurocharged tune, (intake is one the way)
But anyways it deffinetly has more power but it will sometimes run great then other times will misfire so bad the car shakes! I'll pull over and shut it off then start it back up and it will be okay, but it's throwing codes for misfire on basically 4 or 5 cylinders, I have plugs I got from rob that I haven't put in yet because I'm going to buy wires first but what I'm wanting to know if this is just because I need to put the new plugs in or is it a sensor or something bigger? Caused by modding it when it has 120,000 miles perhaps?
I could really use some help as this cars my daily I can't afford to mess her up! Thanks!
-Sean