Lowering turbo inlet temps
Thread Starter
Joined: Jul 2004
Posts: 4,606
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From: Northern Virginia
Lowering turbo inlet temps
Has anyone done any testing to see the benefit of running a cold air intake (relocated filter) or, alternatively, heat shielding around an underhood filter?
I see some of the faster cars running air horns to the nose (front facing turbo kits) or filters that go down into the ACD/FMIC sprayer area, so someone must think it helps. I think AMS also markets a "cold air" intake for the X now.
In traffic, air temps underhood go way over 100F, but post FMIC temps are usually close to ambient. Not sure whether lowering turbo intake temps by 20 degrees or so amounts to much difference compared to the heating of the charge from the turbo. In the end, I think the temp of the air flowing through the FMIC is more important than the intake air temps, but that's just theorizing.
Anyhow, anyone have any thoughts or results?
I see some of the faster cars running air horns to the nose (front facing turbo kits) or filters that go down into the ACD/FMIC sprayer area, so someone must think it helps. I think AMS also markets a "cold air" intake for the X now.
In traffic, air temps underhood go way over 100F, but post FMIC temps are usually close to ambient. Not sure whether lowering turbo intake temps by 20 degrees or so amounts to much difference compared to the heating of the charge from the turbo. In the end, I think the temp of the air flowing through the FMIC is more important than the intake air temps, but that's just theorizing.
Anyhow, anyone have any thoughts or results?
