sorry 4 thread jacking but give this a try

Remove the intercooler, disconnect hoses and as much of the bracket and associated wiring harnesses as you can and spray 1 can of carburator cleaner and swish around for a couple minutes then drain out. Make sure you rinse out the carb cleaner very well(wouldn't want to reinstall the intercooler and turn over your engine and watch in horror as the tach hits 7,000+)with lots of water and dry completely(I used a hair dryer on mine, making sure not to heat up the intercooler too much, allowing time to cool down. I've heard of people hooking up the intake of the intercooler to the outflow and rev the hell out of the engine to blow out the built up crud inside the intercooler aswell. Re-install. I'm not car-savvy and this took me less than 2 hours hood open-2-close.

Hope this helps!