I have just had my turbo serviced by Tony Wright it was the dreaded major at 40,000 ish it also had a cylinder leak down test and replaced the hydraulic clutch accumulator and a brake fluid change, parts,which included the air filter ,poly rib belt, spark plugs,pollen filter fuel filter,accumulator and brake fluid not all the parts are part og the "porsche" major service but as my car is a keeper they are done. i.e the poly rib belt is only an inspection,I had just had the oil changed 4 weeks earlier so he knocked £70 off total £704 then £140 dreaded VAT all in all very reasonable. accumulator was 93.31 plus vat Oh forgot to mention all parts are genuine porche