Upgrade TD03 turbo with smaller compressor wheel 6T/7T/7G/8T/8G/9T to 10TK3 billet wheel. Cover needs to be machined/ported to fit this 10T larger wheel. MAMBA 9-6 Turbo Repair Upgrade kit Mitsubishi BMW N54 TD03L4-10TK3 billet compressor wheel + 9 blade high flow turbine wheel + performance repair kit (For one Turbo).