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hey ho everyone my problem is car has a missfire at idle on one cylinder,and runs lean all the time,when i put my foot down missfire clears and off it goes but still running lean.it also has slight stutter if not driving on full throttle, most off the componants have been swapped for known good units but cant seem to cure it,plugs are fine and coilpacks are ruled out as under load there is no missfire,tps has been swapped and icv cleaned again,coil amp swapped and other bits too,throttle response has improved dramatically and have had timing checked,fuel pressure checked and injectors cleaned so am i missing something? as i need it 100% for caning it round the ring so any help appreciated 
ps its a 94 spec1 gts-t hks induction kit and in house aftermarket exhaust
ps its a 94 spec1 gts-t hks induction kit and in house aftermarket exhaust