Join Date: Aug 2005
Location: North Central NJ
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Overall, air-to-water systems are heavier because of the extra mass the larger coolant system needs to be designed for (or the addition of a separate one). Also, once heat-soaked, they need some time not under WOT to cool down. Air-to-air just throws the hot air away!
Because the IC itself is more efficient (water-to-air), in principle, the distance from the turbo to the intake of the engine should be shorter, which will reduce throttle response. It also can have a lower pressure drop.
Also, air to air efficiency is STRONGLY related to vehicle speed. The faster you go, the more heat you can remove with the IC catching the air. In a liquid-to-air IC, the liquid has much more balast and will not heat up that quickly, so at lower speeds, it still provides cooling.
Can't be all that bad, the Shelby GT500 has one. As mentioned above, for any type of racing applications, an ice system would have undeniable benefits over air-to-air. We all know how important cold air charge temps are.
Black 2003 F350 Dually, Nothing Stock
Black 2006 300C SRT8
Black 2012 CTS-V (630HP)
Black 2008 Mercedes E550