Do you guy's even know what an intercooler does? An intercooler does just that, it COOLS the air going INTO the engine. The reason for a FMIC is simple and has nothing to do with how much boost you can run. The FMIC is larger than stock "some by up to 150%" and is mounted in front of the block. The stock intercooler is side mount and as such will not get as much air flowing over it. The addition of a FMIC can add from 15-150+hp "note that the 150+ is if you are running considerable boost through a top notch turbo". This hp gain comes not from increased boost but from the air being cooler "read: more dense" as it goes into the engine.
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