sorry I changed to 18rgu cams and I am running a huge intercooler and 2.5" pipe through out the system. I am running flattop forged pistons. had the block decked and head milled to get 7.5:1 comp ratio. stock EFI manifold. Ive tried to advance the intake but it moves the powerband down and I loose a little power moved them back to stock and no boost change but revs nicely. retarded exhaust cam and put the intake to stock and gained a little power. no change in boost levels by adjusting the cams. I blew a hole in my intercooler lastnight.