I have brought a S2 2.1 running On EFI..

From cold the car runs fine... but soon as i hit traffic in town it starts playing up..

It will stuggle to run and misfire and i really have to take it easy just to get it home... I have a feeling its down to mapping... Its running a bayjoo chip and injectors... but some said it could be the cold start valve sticking and banging in too much fuel..


help!!!


Pat