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Old 12-14-2009, 09:35 PM   #7 (permalink)
Christ
Moderate your Moderation.
 
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Oh yeah, I forgot about the huge temp difference.

Not to be picking nits, but the ram air is more effective when the entrance is tapered, as in -if you've got a decent funnel to cut, go for it!

If you've got a spare vacuum gauge laying around, you can put a barb fitting in the intake pipe after the filter to get a good reading on pressure change at a specific throttle setting with each type of intake.

In theory, the HAI, then the R-HAI, then the CAI, then the R-CAI should have the least pressure, respectively.
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