Full story - Initial dyno test had a boost gauge hooked up. Boost started out in the negative range and moved up to zero at full throttle. Dyno showed 242 hp at the wheels. Dyno guy thought issue was ported intake. Left shop and spent a week trying to find the issue. Found that the plug on the intake from the EGR didn't hold (EGR was intentionally bypassed). Couldn't see it at first but took out pipe that I'd put a plug into and replaced with a permanent solution. After that the lego blocks showed half boost when punched. On my own I put a 2.9" pulley on it, knowing that it wasn't a bright idea but willing to test it once to see if lego blocks would show any difference, which they didn't. And yes, I don't have a boost guage....yet. Took it back to the dyno guy and told him to tune it (with the 3.4 pulley on it). He wanted to know if I had changed the intake, which led to the 30 minute discussion. Since he's located across the street from me and is actually quite talented I decided not to press the issue and left without getting another tune. Does anyone have a explanation on how porting the intake would have no effect on the boost developed? The dyno guy argued that the opening below the super charger is like putting your thumb across the end of a hose, you end up with the same volume of water coming through as if not constricted but at a higher pressure. I argued that it's a fixed volume of space inside the intake manifold and covering half of the intake doesn't change the volume nor the rate at which air is allowed to escape into the cylinders. Don't abuse the dyno guy, he's pretty well known and does street rods to top fuel dragsters, but on this point I can't agree with him.
