Actually, the problem has been that several people installed intercoolers in the past 5+ years, but nobody provided hard data on the gains. And, AFAIK, not one of them increased fuel delivery so DUH, there will be no power gain. These inherently flawed modifications gave intercooling a bad rap. Done properly you do get power gains.

I have been chatting with Anssi off-line, who sent me the link above. According to him, with the stock turbocharger, intake, exhaust, injectors, and tweaking the injection pump... adding an intercooler should allow 180-200hp on a 3.0L 603 engine. Beyond 200hp will require much more signficant mods, as you can see above. My goal is the simple intercooler, a la Mosselman, ~180hp, and retaining my current 30mpg!

BTW - Marshall was mostly questioning the modified air intake on a stock engine, and also trying to discern if the engine in question was putting out factory rated power or not... which I agree with. He is not in favor of modifying beyond stock power levels but that's because he doesn't quite understand the need some of us have to get MORE power (grunt, grunt!), admittedly at the cost of engine longevity and reliability. I don't care that my engine may only last to 500kmi at 180hp, where it may last 800kmi at stock 148hp...