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AFM744 AFM744 is offline
Cynical Misanthrope
 
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Join Date: Dec 2001
Location: Campbell, CA
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Hobie-
please clarify; your datalog shows no temp delta at inlet temp regardless of boost? From my experience that's simply not right. The most efficient ICs may get full boost/flow to 10-20f above ambient. Ours are not perfect ICs, if for no other reason than their physical placement in a low pressure location at the back of the car.
IC efficiency is radically dependent on ambient temp and actual airflow too. On the S4 my WOT/redline IAT (manifold intake air temp) was 5-10F > ambient on a cold day, and 30-40F > ambient on a hot day. These temps also depend on a 2nd vs 3rd or 4th gear pull (airspeed). Those are ICs mounted in high pressure/flow area in the front bumper. I have no idea what my IATs are on this car yet as I'm still running bone-stock CIS, so I must respectfully question whether we're talking about the same thing.
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X-1, AFM744, Jon, '92 C2 Turbo
JE 8:1 pistons, 964 cams, 38mm intakes ported/polished/twinplugged, ARP hardware, B&B headers/exhaust, 355whp. Full-blown GT35R 3.2 intake EFI pending...
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Old 07-15-2008, 07:10 PM
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