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what air filter?

Discussion in 'A4/S4 forum(B5 Chassis)' started by ian52, Mar 15, 2009.

  1. ian52
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    ian52 2000 a4 1.8tqs-yellow

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    [Mar 15, 2009]
    just got a chip in my quattro sport and want to get a pannel filter to help things along. are they worth while or is a standard air filter fine? you can hear the turbo sucking a lot harder now anyway so a more free flowing filter is bound to help a bit.
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  3. g60leigh
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    g60leigh Well-Known Member

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    [Mar 15, 2009]
    I have gone down the cone filter with a heat shield over the turbo, works really well
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  4. g60leigh
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    g60leigh Well-Known Member

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    [Mar 15, 2009]
    just do not excessively oil it
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  5. olivarley
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    olivarley New Member

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    [Mar 15, 2009]
    Hi mate,

    Just wondering how much difference the chip makes?
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  6. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Mar 16, 2009]
    Personally, i'd steer clear.

    The paper panel filter can flow the 380HP the RS4 requires, so its going to be perfectly happy flowing the 200hp your engine is currently producing.

    Aftermarket filters do not filter as well, and most of them rely on being impregnated with oil, oil which will contaminate your AFM, leaving you a nice bill.
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  7. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Mar 16, 2009]
    The air box you currently have with a fresh paperfilter can flow more than enoug air to feed a 300bhp or more engine. The main thing you will get with a panel or cone is more noise
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  8. audinary
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    audinary Member

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    [Mar 16, 2009]
    I love it when the best route is the cheapest.

    Reminds me of a mate when he took me out on his boat. We were going well enough, I thought, but he reckoned it didn't feel as quick as it should be. He looked at the tacho, thought maybe the prop was damaged or not the right pitch.

    Then it dawned on him. 3 up, we were carrying more weight than usual and it was affecting the trim.

    He looked at Chloe, said "You, OUT". His girlfriend went overboard and pretty soon we were doing 40 knots.

    Irrelevant but I enjoyed playing it through my mind again. Carry on!
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  9. ian52
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    ian52 2000 a4 1.8tqs-yellow

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    [Mar 16, 2009]
    its much better mid range with the chip. should be about 210-215bhp instead of 180 now.
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  10. Siena
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    Siena Active Member

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    [Mar 16, 2009]
    Paper filter gets my vote.

    Oil + MAF's don't mix.

    You could well not oil, or use very little oil, but then, the larger pores would allow damaging dust to be ingested by your engine.
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  11. AB5QTS
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    AB5QTS Member

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    [Mar 17, 2009]
    This thread is scaring me :unsure:. I've just recently stuck a K&N panel in my TQS. They can't be all that bad for the engine. How come they are so popular if they are gonna make my car go kaput:think:. Bit of an over-exaguration. How about the old tights over the box trick:crying:
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  12. Siena
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    Siena Active Member

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    [Mar 17, 2009]
    ^^^ Why are Turbo Zet's or fake dump valves popular?

    If you feel larger pores in a filter, that rely on oil to trap dust are the best way forward, then by all means, go for it. When folk pay good money on a K&N or similar, it's natural they'll prefer to believe anything negative said about them is an exaggeration.

    I can only advice based on experience, I've found significantly more bore wear when rebuilding engines that have spent a lifetime being run on anything but OEM small-pored paper filters.
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  13. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Mar 17, 2009]
    AB5: The problem is the oil in the filter.

    Most aftermarket filters flow better than paper ones, because the filter element isnt as good. Clearly the size of the smallest particle that can get thru the filter is proportional to the amount of effort you need to draw a set amount of air thru the filter.

    Aftermarket filters tend to use an element with much bigger gaps in it, to provide the "freeflow" but becuase this obviously has a detrimental effect to the actual filtration they try to get round this by impregnating the element with oil. The idea being that the small bits of **** will stick to the oil as they pass thru the large holes.

    The problem stems from this oil being drawn thru the filter into the airstream and contaminating the air flow meter. You may never have an issue, or it may die inside a few weeks, it really depends how oily the filter is and what state the AFM is to begin with.

    Lots of "performance" modifications out there are popular, but when you actually analyse them, they offer little or no benefits, and quite often can be detrimental to the car. Its just all marketing hype, and people that THINK they know what they're talking about informing others how amazing mod-x is.
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  14. AB5QTS
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    AB5QTS Member

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    [Mar 17, 2009]
    Hmmm. Might need to rethink that little mod then. Cheers for the views
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  15. Markey
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    Markey Active Member

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    [Mar 17, 2009]
    Paper filter on mine always as said above even when speaking to RS4 tuners they say even with work and mapping they still use the standard air box on powerfull RS models you just can't beat it.
    #14

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