Hi guys. can anyone shed some light on this. i have just recently bought a wrx sti 1997 import. it has had a few mods done (ported head, lightened flywheel ,exhaust etc.. it has apexi power fc ecu fitted also. it did have remaps etc but previous owner had erased these. (quite a green owner) the car does not run that well. it judders backfires and is hunting and stallint alot. etc ..!! what could it be.... wat do i need to do?????? if it needs work to remap or tune can anyone recommend someone
