I am new here. Just bought my WRX in December and haven't even had the chance to start modding the car. I have had it back to the dealer four times now due to misfiring issues. The first three times it threw a CEL. The last time it didn't throw the light, but it flat out stalled on me. Now, after the last time, the dealer contacted Subaru of America, and they say there is nothing wrong with it. I am so done with this car. Has anyone out there had similar issues?
Background on what they said was wrong the first three times:
First time, reset the ECU which cleared the light, returned it to me said no further action was necessary.
Second, its cause it's hot in Arizona (BULLS^%&) replaced wire harness with cylinder ground wires.
Third, voltage fluctuations cause by Arizona heat and damaged battery due to replaced wire harness from previous visit.
Fourth, no issue detected. Driving it home, it sputters at traffic lights occasionally. I shouldn't have to deal with this in a new car with 9000 miles on it and no mods whatsoever. Always used premium (91 Octane here in PHX).
I'm at a loss here. Any pointers would be greatly appreciated.