Just slapped on Toms old bored out TB. It wouldn't hold the boost on Toms car, but works great on mine. Once Tom bought a replacement Throttle Position Sensor (Thanks Bud) the car ran really nice. Throttle response is improved nicely, and there may be some HP gains. To be honest I'm not quite in tune with my new found HP yet, so if it gained 10hp I wouldn't know it. Hell even if it lost 10 I'd still be thinking it's great.... the cams, manifold, CAI and Software really make quite a difference.