Here is how I did mine.
The inlet and outlets ports are not the highest point of the heat exchanger. So, I installed it with the drain valve on top and use it to bleed out trapped air.
If you use the frozenboost.com heat exchanger, pay attention to the 1/8" NPT plug right below the drain valve. Mine was leaking and tightening did not help. It came with a gasket that was a rubber coated washer or something like that. I replaced it with a 1/8" NPT plug and some teflon tape.
I'm still in the cautious testing stage. Most of the driving is in heavy traffic. I haven't had the chance to do some good pulls. Even in heavy traffic, the AWIC unit just gets warm.
May 17, 2017
Just a little update. I've installed an GM IAT sensor on the AWIC's outlet side end tank. (pretty much ready for SD tuning) IATs are about 12-15 deg. C. above ambient. Heat soak is a thing of the past and car feels peppier even after sitting in traffic.
With OEM TMIC, I'd see very occasional knocks in the 1.0-1.3 g/s column. With the AWIC, it has dropped to almost none. I've seen only 2 knocks in 5 months of driving.
I'm very happy with the results. BTW, I'm running an ATP GT3071R at 20 psi.