K&N open top & side air filters? - Chevelle Tech
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post #1 of 11 (permalink) Old Jul 8th, 11, 1:55 AM Thread Starter
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K&N open top & side air filters?

Anyone here tun them? The kinds with not only the standard side, but top opening as well? I thought I read somewhere on here that they hamper performance. You would think it would help a 500-600 horse motor.

Any input?

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post #2 of 11 (permalink) Old Jul 8th, 11, 2:41 AM
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Re: K&N open top & side air filters?

I have the xtream lid with a tall filter I dont see how it can hurt performance. The more air the better. I went from a fram filter with a solid lid to the k&n with the xtream lid and noticed a deffinate improvment!

This is an old pic of my engine but I have the same filter. . .

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post #3 of 11 (permalink) Old Jul 8th, 11, 3:32 AM
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Re: K&N open top & side air filters?

Had a 14x3 Kand N now a 10X3 fram with Lid noticed no difference between the 2, ran exactly the same without any air cleaner at all, too.
Pretty well warmed over 350

This post is a duplicate of a post that you have posted in the last five minutes.
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post #4 of 11 (permalink) Old Jul 8th, 11, 4:31 AM
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Re: K&N open top & side air filters?

how much extra flow does that lid provide when it's an inch away from the bottom of the hood with the insulation laying on top of it?

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post #5 of 11 (permalink) Old Jul 8th, 11, 7:18 AM
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Re: K&N open top & side air filters?

Looks like a party favor from an asian restaurant. Is there a fortune cookie inside?


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post #6 of 11 (permalink) Old Jul 8th, 11, 7:48 AM
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Re: K&N open top & side air filters?

been there done that. I tested closed top and open top with both sealed to cowl hood and say no difference. But this was in the 1/8 mile, there maybe something in the 1/4. But in theory in make good sense that fresh air is better for the engine even if it doesn't make more power. And if it looks good its a win-win.
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post #7 of 11 (permalink) Old Jul 9th, 11, 12:55 AM
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Re: K&N open top & side air filters?

Super comp cars have an air intake area of 14-16 sq. inches. They run 7 second 1/4 mile times.
Your street car has more area with a regular 2''x14'' filter
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post #8 of 11 (permalink) Old Jul 9th, 11, 9:35 AM
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Re: K&N open top & side air filters?

I have a 14x3 K & N filter on my 496 that is putting out 525 hp. Had it on the dyno yesterday and gained 5 hp when I took it off and ran without.
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post #9 of 11 (permalink) Old Jul 9th, 11, 9:44 AM
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Re: K&N open top & side air filters?

I did a back to back test last week on my wifes car that runs 10.70's in this weather. Engine is a 377 sbc and the car was .06 slower with the 3x14 element with the extreme top. You'll never feel a horsepower difference that causes a .06 difference.
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post #10 of 11 (permalink) Old Jul 9th, 11, 9:47 AM
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Re: K&N open top & side air filters?

I ran mine outta da box, lid and filter and lost nothing. I have since cleaned and re oiled both and now its quicker without??? go figure.
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post #11 of 11 (permalink) Old Jul 10th, 11, 1:25 PM
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Re: K&N open top & side air filters?



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