I never had the car dynoed when I had the full phase 3 setup. I'm sure you could make 650+ with this pulley and a good tune. I'm getting tuned by AED right now and he wanted me to use an 82 mm pulley so I went up a size. The car made 612 whp and 548tq SAE with the 82mm at 6650 rpm and that's where we ran out of fuel with the 47lb's injectors ,I bought a set of ID 1000 to be able to fin my tune . This pulley is off a phase 3 kit that I bought from a member here.