It should definately pick up power over the 47/88 just due to the turbine side alone. As far as the billet wheel..........I'm not convinced they are better in a lower boost combination. My car will make 27lbs of boost. I tested a billet 94mm against a cast 94mm back to back with no noticeable difference. They made the same boost, same 60' with the same et and mph. Maybe in a high boost situation like above 35-36#, the billet wheel could be better.