Hi there have a Gti mk5 k04 conversion running 345bhp. Basically on cold starts and if the car has been left for a couple of hours it seems to misfire around 4k then it’s completely fine. Also on cold starts etc idle is very lumpy and rough. Codes from my basic scanner brings up p2293 p2294 and a cylinder 4 misfire. Sparks, coils and pcv have been replaced. It was running completely fine on a stage 1 before mapping. The turbo has been recently rebuilt with an uprated thrust bearing. If a mobile mapper in the Essex area could help that would be great. Any ideas ? Thanks.
