Ok , for some days I have had a bad middle silencer with the baffles going in it, now i think this will be affecting backpressure causing sluggish boost which it appears to be true. but now i have another problem, I am getting smoke on engine start up and revving, I took the car for some hard full throttle runs and the smoke clears up and the car runs fine but boost is down from 12.5 psi to 11 psi, I have put the boost drop down to the extra backpressure having a effect on the tubs as surely there would of been smoke on boost if the tub seals had gone, the smoke on start up seems to smells like it is running rich, the car has a nistek chip from andy and i have heard these are set to run rich anyway so with the loss of boost and extra backpressure is it possible that the smoke on start up is just it running too rich.

 

Any advice from you geniuses is really appreciated as i feared the worst when i saw the smoke and thought tubs?

Is it possible it could be PCV valves, wouldnt these cause more smoke on full throttle runs?

 

as penelope pitstop was so fond of saying hyelp hyelp

what colour is the smoke?

blackish

Problem sorted, pcv valves, went out and hit the pcv valves with a long extension a few times and now no more smoke, when i take the plenum off in winter ,time for new pcv's i think