I dont know if this is in the right forum or not.
but am still thinking of tuning my car. i got a Mk5 2.0 turbo, which is at 170hp, realisically what sort of improvement would you be looking at, and what effect does this have on fuel economy etc. would brakes need to be uprated!!!!
also someone told me that doing this can have a long term bad effect on the engine, is this true????
any help on this much appreciated.