2.0 turbo 2005 stage 3 no idea what tune its running !! (Petrol) on start up reving the car theres puffs of black smoke not loads but its there ? when its upto temp and ticking over after a few minutes it smokes white/grey ish smoke once moveing smoke goes away any ideas no check lights no loss in power still holding 24psi through gears ????? TIA.