Stock Intercooler Removal

Park your car in a flat, level area and allow it to cool down properly.
Using a 10mm wrench, remove the negative terminal of the battery.
Remove the two 12mm bolts from the throttle body to the intercooler using your ratchet.
On the driver's side (USDM) remove the 12mm bolt through the intercooler itself, the two holding the bracket to the intake manifold can be left for now.
Remove all three 12mm bolts on the passenger's side (USDM) and take the bracket out of the engine bay for now.
Gently pry out on the retaining clip spring until it sits in it's unlocked position (It should stay there without need of holding it with a tool)
Pull the hose connection out of the charge pipe and tilt the intercooler to remove it from the engine bay.