Quote:
Originally Posted by BlaqWhole
I think this is a good study you did. K&N advertises 441 CFM flow on their basic panel filter.
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Most flow testing is done at 10 or 28" or water. 28" tends to be a standard, which is what I've reported here. I'm thinking that K&N number isn't at 28", but closer to 10" or less.
Quote:
Originally Posted by Higgs Boson
1 cfm is about 1 hp. it can depend on the rest of the combo though.
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Keep in mind that this test was not performed through a head, intake, and throttle body such as the Vararam flow test, this is just through the tube and box, so the numbers will read much higher. According to Vararam a 1 CFM gain through the head, intake, and TB is worth 0.2 HP per cylinder x 8 cyl = 1.6 hp per CFM gain.
HOWEVER, none of this math applies to this test as it was not done through a head, intake, and throttle body, as I don't currently have them to run these kinds of tests through.
You can view the
Vararam VS the Competition page, as they tested a few intake setups through a head, intake, an TB. The math is shown at the bottom of the page.
Is it accurate? I don't know.