I've done some reading up on IC's and due to the huge cost of 930 specific IC's and the fact that I need a slightly different setup to install on my car I decided to modify a universal IC.
To make life easy I needed a same side in & out IC. Most of these I could see where Twin pass.
It seems most people don't rate twin pass IC's too well due to the air having to do 180degree change in direction half way through and passing twice through the core may aid in pressure drop.
The original small IC seemed to function OK and I'm just hoping as this large unit withits 3" in/out, up from the 2.5" of the small one and it's larger core it will be able to flow more air and be less restrictive and cool better than the small IC I currently have. So even if its not as good as a single core IC it maybe better than my current setup and it will be easier to install due to the in/out on the same side (plus it was cheap).
As I progress with the whole setup I may install a full bay single pass IC later.
Twin core's are supposed to cool the air more due to the air passing two cores but it seems most people say the majority of cooling is done before the air gets after way through a single core unit so the second pass in a twin core doesn't do much good!
Single core :
Twin Core (Twin Pass) :
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1980 SC Flatnose, Euro 3.0, LW Flywheel, 993 Cams, Port & Polish Heads, RS Cut Valves, Magnacor Leads, Boxster Brakes, WEVO Mounts, TRG Roll Bars, Rollcage, RSR rear fenders, WEVO Shifter, K27 7200 Turbo, OBX Headers, Tial Wastegate, Omex 710 ECU, 3.2 Intake, Full Bay Intercooler.....400HP
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