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panel filter

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by jonny87, Mar 7, 2012.

  1. jonny87
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    jonny87 Active Member

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    [Mar 7, 2012]
    im sure this would have been covered before but after alot of searching and even more trawling i couldnt find anything :(

    anyway, panel filters (k&n, piper cross etc) are they worth the £35+ they cost?

    I'm not looking for an extra 10bhp and 30nm's here, better throttle response and a bit more of an induction roar would be nice though, so whats everyones opinion?
    #1
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  3. jjmurphy21187
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    jjmurphy21187 Tiptronic

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    [Mar 7, 2012]
    I had a pipercross on my old 2.5tdi, thought it sounded a bit better but I have a sensitive ear.

    Fitted the exact same one on my 3.0tdi this weekend and the difference is minimal to be honest. I also removed what I believe to be a 'snow filter' as it seemed really restrictive. As I'm planning on having the DPF removed and the EGR banked out I figured allowing more air into the engine (and creating minimal restriction of air through all through the engine) could only do good...

    Not heard one on a petrol but imagine any noise difference would be slightly more noticeable due to the quieter engine.

    Not used a K&N but apparently if you're not careful with the oil they can ruin MAFs...
    #2
  4. Stringster
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    Stringster Missed gear

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    [Mar 7, 2012]
    Not worth it in my experience. No gain in power and they get dirty quicker.
    Stick with the standard paper filter and change regularly.
    #3
    rob0904 likes this.
  5. razza1
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    razza1 Well-Known Member

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    [Mar 7, 2012]
    Definitely increased sound, better performance - not sure ...
    #4
  6. ben.w93
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    ben.w93 Member

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    [Mar 7, 2012]
    Not too sure about performance, but it makes it sound better. My A4 was fitted with a K&N panel when I bought it, dont think the thing had ever been cleaned, it was full of sh**e. The K&N uses oil to trap dirt and coats the MAF in oil which is a bad thing. Spent ages removing my airbox and MAF carefully cleaning it and removing all the grease from it. I now have a dry pipercross filter on it. To be honest a paper one is perfectly sufficient. Don't go down the cone filter route either because that just draws hot air in you engine bay.
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  7. jonny87
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    jonny87 Active Member

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    [Mar 8, 2012]
    thanks for your thoughts and experience guys, i had a panel filter on my old s3 but never noticed any difference really

    i know to steer clear of k&n due to the oil, not seen the location of the maf on my a4 yet but where ever it is i cba removing it to clean it every few months

    maybe i'll try a pipercross for now and see how it goes, can always flog it on afterwards. I'd never have an induction kit unless it was a bma enclosed jobber but theyre mega bucks :( would match my carbon splitter though... ;)
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  8. harvey01
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    harvey01 Member

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    [Mar 8, 2012]
    i have a new green panel in the wraper £30 posted if your intrested its all part of the stage 1 kit
    #7
  9. jonny87
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    jonny87 Active Member

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    [Mar 8, 2012]
    not looking to buy just yet mate, brassic

    thanks
    #8
  10. Marrow
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    Marrow Member

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    [Mar 8, 2012]
    Panel filter does nothing for sound or noise ! I had a pipercross panel filter did nothing stick with the std item mate and save your cash.
    I have changed to BSR induction kit which comes with heat shield enclosure so no heat soak issues and sounds awsome but still no power gains just sounds faster lol
    #9
  11. ben.w93
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    ben.w93 Member

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    [Mar 8, 2012]
    Here is a pic of my airbox dismantled, I can't remember exactly where the MAF sensor is without having the thing in front of me, I can remember that it was held in with security torx screws though.

    [​IMG]
    #10
  12. razza1
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    razza1 Well-Known Member

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    [Mar 8, 2012]
    Considering its not fully enclosed at the top , would think it gets heat soak from above?
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  13. jonny87
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    jonny87 Active Member

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    [Mar 9, 2012]
    ah the good old heat soak argument, what ive been told in the past and believe is that, when moving at speed (10mph+) the hot air is pushed out of the engine bay towards the rear of the car, the air box induction kit or whatever will get a decent amount of fresh cold air entering the bay from the front of the car.

    only at low speeds or a standstill will it take in hot air, ive only looked at a glance at the airbox but it seems to me that audi fitted a fairly effective cold air feed to the air box.

    so the question is, whos r&d is better audis or the likes of k&n or pipercross, i know who my money is on :)
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  14. razza1
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    razza1 Well-Known Member

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    [Mar 11, 2012]
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  15. jonny87
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    jonny87 Active Member

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    [Mar 11, 2012]
    because i was talking about heat soak there which wasnt my question at all.

    i did kind of answer my own question with the r&d thing but i was still asking for other peoples opinions and experiences, which they gave so thanks to all
    #14

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