Well the air is much hotter coming out of a turbo so would heat the liquid up quicker. For a supercharger that is not as much of an issue. And no for a ct you can't just do that. You will overspin the blower before you can make up for the boost loss. You will also put more wear on the supercharger for spinning more for a lower boost amount.

 

A supercharger is still pushing hot air. You're not going to overspin the blower, a vortech/comptech isn't a rotrex. There are people on this board alone pushing 15-20 lbs of boost on their superchargers. If you haven't had first-hand experience with both you shouldn't make such gross generalizations. The FMIC is proven to lower IAT over the aftercooler for longer periods of time. The single-greatest drawback being the boost loss.

 

Vortech can run higher boost comptech won't reach those numbers. Yes you can overspin the blower.

 

I didn't say you could or couldn't I said you're not going too. A 3.0" pulley with a fmic will put out anywhere from 9-11lbs of boost without "overspinning" the blower and still make excellent power.

The OP never said anything about a comptech kit, he's debating between SOS and Kraftwerks and wanted to know which cooled the air better/more efficiently. Here's a hint: it's the FMIC.

 

Cooling aside, SOS is expandable (up to 20+ lbl's with the Novi 1200) where as KW your limited to 9.5-10.5 lbs of boost. So decide what power you want and stick with the cooling method that comes with the kit.

 

Your misinformed. The AC in the engine bay only holds the water. The heat exchanger for the AC is also in the grill like the fmic. With the upgraded SOS heat exchanger visually you cant tell the difference between this and the FMIC.

For all out power and efficiency the SOS kit with upgraded heat exchanger hands down is better. KW is a great kit too, but for your OP questions/goals this is where its at. FMIC are great for turbos, not necessary for the drawbacks with an SC. For a KW kit which is at its limit right out of the box, it also makes sense. The rotrex blower spins twice as fast as a typical Novi blower with different boost characteristics to help offset some of the drawbacks.

 

But there is a point depending on boost where there is diminishing returns. Overall the boost loss does not offset the added cooling of the fmic. You are hard presses to make anything over 10psi on a SC with an fmic. 2-4psi loss isn't very efficient. Now in the scenario where someone is running a kit with 8psi AC and then another guy is running 8psi fmic I can see the benefit. But your also putting more strain on the SC to spin faster to compensate for the boost loss. So that guy is running a 3.6 pulley vs the AC guy who only has to run a 4" etc...etc... The only time I would consider an fmic on a SC is if I were racing competitively and in a particular HP bracket.

 

But that 3" pulley on an A/C kit will net 13-14psi and exceed the power level beyond the added cooling efficiency of the FMIC.



BTW the SOS and CT kits both use novi blowers so its a fair comparison. a Rotrex and Novi is not. The point is the FMIC cools the air better, but not more efficiently for an SC is the point.

 

It seems like the only way to be sure is to log pressure and iat's. Numbers don't lie.

 

well with the 3.2 pulley on my ap1 (novi 1000) i made 9.5psi with a fmic.who is running a 3.2 with a aftercooler and how much boost did it show on the dyno,not your boost gauge.