krs.brown

Got a MY05 WRX and since it's been mapped was getting a misfire code on cylinder 3. Replaced coil pack drove a while and wasn't getting full boost for a while then the boost came back to 1.4 bar. Misfire started again in cylinders 1/2 and 3.
Replaced the neutral position switch and the misfire codes are coming back on all 4 cylinder's. Car is running perfect though that's what i dont understand.
Out of the 5 resets of the ecu 4 reduced the boost could there be a connection there.

Any help or ideas out there

Thanks