yeah Nick at turbo concepts built it for me . I really havent put boost to it yet . I think I hit 15psi max so far . My previous turbo was a Borg warner s259 ,with that turbo I was trapping 120mph at 16-18psi on 93pump . This set up is e85,70mm turbo (70+lb/min ) +ls2 coil conversion . I had bad spark issues ,but hopefully not anymore . Results should come in spring .Here in Michigan we are expecting 14in of snow tomorrow :(