I had mine tuned at two places(RUF PERFORMANCE and a mate who tuned a few cars before) before going to CRD
Jim done the best tune buy far,the car feels like it has a factory tune in it and he got more power out of it then the orthers did.
Im running a POWER FC,4 inch exhaust,cam gears,pods,everything else is stock (GTR R33 LM) and it makes 250klw at all the wheels,it ran flat 12s on street tyers at the creek 2 weeks ago dont waste your money go and see jim