I'm surprised you didn't get more feedback on this topic. I know T-netics used to get alot of housings honed for customers, turbine and comp. I even saw one customers turbo apart where he had the wheels honed also. If memory serves me correctly, the customers with the housings honed gained a little better air flow, which intern gave them a few more ponies, but not much. Honing the wheels didn't seem to improve anything but looks. The honed pieces sure did look good and I guess they made the parts easier to clean, too. I don't think they improved performance enough to justify cost, from what the customers said.