Was back when they were new so sorry don't remember the cost, but I can tell you I sat up the arse of one of the M3's in the GT2 with 186mph showing on the clock. The car was much punchier and limiter was also removed with the re-map. Only thing was the rear valance sometimes flapped at the higher speeds. Also added a hayward and Scott exhaust. Great car the E46 M3.