i run 548-549 on my stock lb7 turbo and cp3. I am running Trent's tuning and run a fass 150, mbrp exhaust, afe intake and ppe boost valve. I talked with Kelsie Epp @ the Billings Mt Diesel Drags and she dyno'd 590+ with stock lb7 15% extrude honed tips, lbz cp3 with a modded regulater, manifolds...