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From my experience with cars, I have found that any restriction creates many problems in a car. The stock IC is designed to work well at 9psi of boost (stock). 16 psi of boost is A LOT. It is a lot hotter of an air charge and hot air is bad. Hot air is like adding 5 blocks of concrete into your hatch. Those upgraded IC's wont make much difference on the low end (yet, we get to that) but will make it where the air is its hottest (the point at which the air becomes inefficient) or in your case, your max boost, 16psi. If the intercoolers are truly better than stock (any proof?), then the intercoolers will allow manifold pressure to go higher and at a colder air charge. Cold air is good and will definitely give you a power boost. I wonder though if the stock intercoolers are very efficient at 16psi still, then you wont notice too much of a difference...but from what I can see, they are actually restrictive (look in your stock ones when you take them out, tell us what you think) more so than some of the quality ones out there so it should be a 5-10hp gain at 16psi. If you really want to know, install a temperature sensor in your intake piping, check it before you put IC's on, and then check it after. Should give you an idea of what you did. Now, to get the intercoolers to work on the low end, you need more or hotter air to flow through them at the low end. How do you do this you ask? Simple, get bitter turbos or bigger cams. Or get both. And then the air will be plenty pressurized, will have plenty of cam lift to clear the exhaust gases from your motors chamber, and your turbo will be big enough to send massive amounts of air at 15psi straight to those big bad intercoolers and actually get even more efficiency out of them. Eric
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