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  1. 02-26-2013 11:03 AM #1
    Dr.d
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    What size cone filter to use with stock maf?

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    I'm looking to order a cone filter to hook right up to my stock Bosch maf. I measured the O.D. of the maf and got about 3 3/8" or about 85.5mm but I can't find a filter with that size flange so far. I am considering getting 3 1/4" and just jamming it on there but thought I'd see what others may have done first. Any thoughts?
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  2. 02-26-2013 11:07 AM #2
    jeffrey146
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    04 S4 nogaro avant MTQ, 2013 CT200H F sport, 93 EG hatch
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    I would stick with the stock air box unless your running a BAT or something. You will not have HP gains or anything.

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  3. 02-26-2013 11:22 AM #3
    Dr.d
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    I'm aware of that. I did the same mod on my b6 and really enjoyed the increased sound. Since my car almost never sees rain im not worried about loosing the protection of the airbox from water. Thanks for the heads up.
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  4. 02-26-2013 11:23 AM #4
    Das General
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    3.5" x 9" AEM Dryflow
    Stage 3+ RS6's
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  5. 02-26-2013 11:29 AM #5
    Dr.d
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    ^^ thanks!
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  6. 03-18-2013 10:20 PM #6
    Banzai_Rasta
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    Quote Originally Posted by Das General View Post
    3.5" x 9" AEM Dryflow
    Quick Ques on this.... the MAF dia is 3" yes?....wud the 3.5" x 9" AEM Dryflow be a direct fit?....
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  7. 03-18-2013 10:23 PM #7
    DiscoPotato
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    What size cone filter to use with stock maf?

    If you have a stock maf you don't need a filter.
    1996 A4 - Rolled into the woods
    2001.5 S4 - Stolen
    2001 STG3+ S4 - Sold
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  8. 03-19-2013 02:07 AM #8
    udcc11
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    Just darintake mod the airbox with a 3 inch cone filter and 30 degree bent 3 inch tubing.
    2000 Nogaro S4 Six-Speed Stage 3 Frankenturboed
    Totaled 2002 Santorin S4 Six-Speed Stage II+
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  9. 03-19-2013 02:38 AM #9
    itguy
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    Adding a filter will throw off your maf readings. Adding a cone filter increases the maf's efficiency.
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  10. 03-19-2013 08:46 AM #10
    Das General
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    Quote Originally Posted by Banzai_Rasta View Post
    Quick Ques on this.... the MAF dia is 3" yes?....wud the 3.5" x 9" AEM Dryflow be a direct fit?....
    An 89MM MAF is 3.5 inches. You are going to need a 3.5" coupler to attach your MAF to the intake.
    Stage 3+ RS6's
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  12. 03-19-2013 09:19 PM #11
    kbS42001
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    3.5x9 AEM Dryflow like Das mentioned. heavy duty rubber plumbing reducer and hose clamps from Lowes, Darintake bottom half of airbox remains and helps support the filter. bonus is that the grill "ram intake" snorkel still remains and clips in.
    '01 Santorin S4
    "Welcome to owning an Audi...its a love/ f'n loathe relationship...but shhhhh...it might hear you and somthing else will break..."
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  13. 03-19-2013 09:42 PM #12
    ddillenger
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    hot air!=power.
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