Reviews of K&N air filter

PR Score ?

Based on 284 reviews and 907 votes

907 votes

Average rating ?

3.5

Visible dirt:

2.4

Power:

2.9

Throttle response:

3.2

166

284 reviews

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among 5 manufacturers

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K&N › Air filter

RoccotMan 12 Apr 2006, 16:28

Rating 3.0

Power:
Visible dirt:

IMHO the performance gains from the K&N are marginal at best, especially on a 1.8 litre motor. It's less hassle to just replace the paper filter element every year with a freash one than cleaning the cotton filter annually. the K&N will likely require eight years to get your return on investment. Besides it you live anywhere where it's dusty you going to be doing your motor harm... I read about farm trucks with these installed the puke their motors because fine particles are getting into the motor. YMMV.

Cons: fine particles into motor

K&N › Air filter

VR6Nikopol 7 Jul 2005, 20:40

Rating 2.5

Power:
Throttle response:

I just did the switch to a K&N filter recently on mine. Did not notice any difference. I remember feeling a greater difference in my VR6. Maybe its the fact one is N/A and the other F/I.

Cons: no noticeable difference

Vehicle: Audi S4

K&N › Air filter

RetroOrbitalBleed 7 Jul 2005, 19:29

Rating 3.0

Power:

I found a used ABD racing filter and I could feel it with out a doubt. I bought a K&N filter and drilled holes in my box and I say it was a waste.

Pros: could feel it

Cons: it was a waste

K&N › Air filter

L33TX43RT 13 Aug 2004, 01:16

Rating 5.0

Power:

I choose K&N, because it's reusable, and offers the performance I look for in an air filter.

Pros: reusable, good performance

K&N › Air filter

vasillalov 27 Jun 2004, 05:46

Rating 5.0

Throttle response:

Here is a 2.0 owner with a 1999 GL and 56K on the clock. I decided to use K&N drop in filter as a replacement on the CAI. So here is what I noticed after I put K&N on my puny 2.0: 1. 1.7 - 2.3 EXTRA mpg 2. Better throtle reponse, especially above 3K rpms 3. No problems concerning the MAF and oil flying off the filter I think my $45.87 was well spent!

Pros: extra MPG, better throttle response, no MAF problems

Vehicle: Volkswagen

K&N › Air filter

Dan Halen 27 Jun 2004, 05:05

Rating 4.0

Power:

Your experience is your experience- that's fine. I have seen gains. My fuel economy has gone up about two miles per gallon on average.

Pros: seen gains, fuel economy up

Vehicle: Volkswagen

K&N › Air filter

15degree_V 27 Jun 2004, 04:52

Rating 1.0

Power:

My vr6 had nothing but maf issues after I installed a k&n. I wouldn't even dream of putting a k&n in my 1.8t. The paper filters are fine. It's been proven on the dyno more than once that you get no gains from a k&n whatsoever. Unless you think you are going to clean and reoil your k&n to reuse it and save on filter costs (in which case again you have to be careful not to over oil or you screw up your maf up big time) there is no specific benefit to gain by installing one. Let me note that I've not noticed the same issues in older vw's, just mk IV's.

Cons: MAF issues, no performance gains

Vehicle: Volkswagen

K&N › Air filter

Quick VW 25 Jun 2004, 16:34

Rating 5.0

I just turned over 9K on my car. installed a K&N on the day I got the car with 34 miles on the clock. After reading your post the other day on this subject, I decided to check my MAF and intake for signs of mineral oil. There were no signs of it. Not on this car, or the Jetta 1.8T I had before this one. I ran that car with a K&N panel filter for for approx. 36,000 miles until I sold it for the GTI. I have owned (6) cars in my life. (4) of them had K&N filters in them. I have never had a problem with any of them as a result of these filters.

Pros: no signs of mineral oil, no problems

Vehicle: Volkswagen

Mileage: 9000 km