2000 blitzen B4 twin turbo 5 speed manual done 150ks all it seems to have done to it is full exhaust from turbos back, don't really know how to bring up error codes on it yet as fairly new to the subaru game, just had o2 sensor in exhaust maniflod replaced so far as it had 2 broken wires but still cutting out at 140 when under wot in third gear