Hi people, this car is really starting to do my head in! Car has never thrown a cel or missed a beat. Here goes car has new hi flow turbo, new plugs, pressure tested intercooler set up new intercooler claps etc etc . new big trans cooler , full trans flush. Does not use oil. Big dump pipe, hiflow cat 100cel. Car use to pull like a train, but not any more its sad. All it does now is bellow grey black smoke and lucky to out run a hyundai xcel.. Im lost for ideas??