Hello everyone, I just finished my WAIC setup. I saw this post in doing research and wanted to share the build.
In my case it's a custom fabrication of universal components. The WAIC itself is HUGE and flows a lot of air and barely fits in the engine bay (Had to relocate hoses and bend back the tab on the firewall to make it fit).
The purpose was to do a budget build and even though it took several days of non-stop fabrication, I ended up with a rebuilt VF-39 AND the entire WAIC setup for less than the price of a half decent TMIC.
You can read a blog article about the entire build here: Turbo Upgrade and Fabrication on the WRX ? Dmitri's Gallery
Here's a couple pictures:
Engine Bay with Water to Air Intercooler
Front Mount Heat Exchanger
The final Intercooler Unit with my custom sticker and all fabrications finished
The water does not get much warmer than the outside temp and it's always cold to the touch even after repeated tuning runs. I think properly designing the system makes it well worth it.
Now to fix that damn ram intake that pulls hot air in to further improve cooling of intake air.