He is talking about the old tt water to air suby ic. The problem is as my son the engineer explains it is the tt motor only made about 1 bar (14.7 psi). As long as you are happy with that it will be ok. My son's sti has a fmic, not a waic. We used a thermocouple wire in the throttle body connection and at the output side of the turbo. He has a 30r and at the time was only using 18 psi. In 3 rd and 4th the turbo made 340 df, at the throttlebody it was 106df. That was a 95d evening outside. I also have a tt waic and haven't decided what to use yet. I think it will work. When you get off boost the incoming air also cools the ic back down. The heat soak from the engine compartment is the question.
You can actually drive a turbo suby without getting on boost but it's no fun.
look online for custom awic's they are not expensive if you want a better one. I think they even show sizing on their sites. He found me one and if I can find it I will post it.
This is what he sent me:
http://www.frozenboost.com/product_info.ph...3cd613f392270fe279.00 for the small one for 350hp and 299.00 for 600hp seems like a steal for a complete kit.
ok off the rs liberty club site: 2.2 at .85 ve pressure ratio 2.0 (14.7) at 7k is about 464 cfm. It says 2.2 but then says 2.0 so?? 300hp about, that might be a vf39 (stock 04 sti and a 2.5 at 17 psi) actually that site says with a 2.5 it takes 526 cfm to make 14.7 at 7k.
Power conversion: 1hp = 1.45 cfm, 1 cfm approx = 0.0745 lb. of air/min, 0.108 lb/min approx = 1hp
800 cfm at about 24-26 psi is about 400-425 hp at the wheels on awd. 500+ at the crank Thats with a 30r turbo which is pretty big and needs a 2.5 with acvs and bigger cams to prevent excessive lag.