A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

K&N air filter, can you tell a diff?

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Old 04-03-2001, 07:09 AM
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Thankyou.
Old 04-03-2001, 07:13 AM
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Default Also, especially if you do the swiss cheese airbox mod...

Air is entering the lower part of the airbox from all directions, and if going by wind dynamics, direct air flow (ALs2) in is further reduced by turbulence (T). The K&N filter in my case moves air through the lower airbox at a higher rate, allowing turbulence to be reduced, inversely air restriction is reduced.

If a car is none swiss-chesse boxed, Bat137s claim I agree with air restriction can occur AT ALL AREAS of the mechanics. Intake, Filter, Feed, Exhause EVERYWHERE. Anything, anything coming into or going out of the engine is restricted at a certain point from electrical voltage/wattages to fuel to air. EVERYTHING. If you change the restrictions on a certain component of the engine, you will yeild a response sometimes positive and sometimes negative.
Old 04-03-2001, 08:03 AM
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Default You're saying my mouth is overloading my ***? Wait a minute. That's exactly .....

what we are talking about. More air comes in but the same amount goes out? I'm sure the extra sucking sound greatly improves throttle response. (in your mind) My wife swears her car goes faster after she washes it too.
Old 04-04-2001, 06:19 AM
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well the .004 lbs that wash off after a car wash probably DO have a performance effect HAHAAHAH
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