Ditch the standard intercooler for at least a front mounted volvo unit at the first opportunity!! With a slightly modded car the standard placed IC heat soaks within seconds at WOT, and can barely flow even stock power levels with efficiency.
FWIW, I tested this with a "G-tech meter" on my car. On all the HP runs I did up and down a length of road, with cool down drives in between, the average was 235whp. I did 3 'no cool down' runs each ~40 seconds straight after a run, and measured between 195-205whp. Again, FWIW on a G-tech, but its still picking up a large difference.
For a run I drove 1/2 throttle in 1st to ~28mph, WOT in 2nd and 3rd to 6,000rpm. In 2nd it really moves without much problem as it doesn't take long to go through the gear, but mid-way through 3rd I can feel it suffering, even though it holds max boost to redline. This is running 18psi with a much more efficient GT2871R turbo.
Moral of the rant is the SMIC sucks. Big or small power levels - get rid of it.