K&N Air Filter for stock airbox

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04-01-2007, 06:22 PM

#31

S~Factor

Join Date: Sep 2006

Location: Allentown, PA 18103

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It made a huge difference in my Ford Explorer.
Didly squat in my S2000.

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04-02-2007, 12:46 PM

#32

martin j

Join Date: Feb 2007

Location: Dunfermline.

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Quote:

Originally Posted by spectacle,Mar 28 2007, 01:31 PM

I only noticed a difference in sound with mine...little deeper of a grunt it seemed.

Gut your airbox for more sound but don't take off the lid you WILL lose power.

What do you mean when you say "gut the airbox" is that like the hondata mod for the civic? ie. remove all the dividing sections so it becomes one big box.?

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04-03-2007, 02:29 AM

#33

TheBeanSoldier

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I dyno'd the K&N filter when I was getting a baseline almost a month ago. It only gained 1-2hp throughout while running richer (most likely back at the same A/F now that the ECU has relearned). Did 2 base runs being completely stock, then immediately installed the K&N, then did 3 more runs. Didn't change my mpg.

I guess the stock filter is just that good- but just has to be replaced when its time is up.