had all pipes and tubes checked at the dyno (full diagnostic). Intercooler clean as a whistle .. had a catch can fitted as soon as I got the car and i check the filter every week or so when i check oil levels .. all clean and i mean nothing at all. All I know is, during the Dyno the performance was higher than stock but that was after the 3 inch exhaust was fitted. The car had only done 54000 when I bought it back in November last year. Engine diagnostics were check at last service (about a month ago) and their were no faults in the system. MAF sensor was also cleaned as well along with a new fuel filter. Runs like a sewing machine. Plus surprisingly good acceleration from say 90 to 130 ..