more on this issue (thanks to all answers on previous question) start from cold and do a journey that gets it to full temperature and it seems fine,do a short journey stop for a while then start again you pull away but revs take 10 to 15 seconds before turbo comes in and pulls strong chage gear same problem once up to speed its fine and stays that way for rest of journey.Tried maf no different(bit more sluggish) disconnected egr cleaned manifold sensor,sensor in airfilter box should i get a reading across the pins with my multi meter as i get nothing on any combination.
It is chipped and when this fault happens i get no smoke on acceleration when its okay i do get a bit of black smoke when full throttle ,wiring loom is spotless at ecu and exit under head thanks in advance for any help