hi all just purchased an 09 wrx sti hatch, having a few intermittent issues, been remapped by alan jeffry 370bhp.
sometimes it idles fine the its lumpy and revs rise a bit before dropping back.
also sometimes it will splutter on acceleration as if im in the wrong gear
im finding the car a tad complicated at the moment,there is no cel light or anything showing , i believe its possibly a sensor as its not all the time.
any advice gratefully appreciated