Hi Eric i have been us the same turbo only internally gated Wolf 550 ecu with 660cc injectors kelford cams running on Australian 98 ron unleaded fuel with forged bottom end and Lewis ported and flowed stage 3 head at 473hp at wheels with 15 pounds boost for the past 9+ years and i have next zero lag and always fun to drive. I cant see any reason for you not getting the output numbers your wanting.