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SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS! |
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06-22-2009, 05:03 AM | #1 |
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advice: so i took out this filter
as stated i have the rpi scop and bmc drop in.. i went to clean it today and noticed another filter mounted on top of the inner airbox... do i remove that or not????? its the filter that is inside the airbox and wen u close it, it sits right on top of the drop in... any advice wood be appreciated
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06-22-2009, 08:54 AM | #2 |
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Most remove it.
BTW, you have a typo in your profile "Drives:" section. (It's a z4mc not an a4mc)
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06-22-2009, 01:09 PM | #3 |
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It's an emission filter to catch fuel vapors after the engine shuts off. I think most of left the filter alone since there's no power to be gained by removing it.
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06-22-2009, 02:35 PM | #5 |
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Dyno plots do show a slight increase with the filter removed.
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06-22-2009, 02:54 PM | #6 |
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you get about 1~1.5hp with the charcoal filter removed, and I really doubt you can feel it.
Who cares, I have GruppeM/RPI intake, and it's definitely better than the stock air box. |
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06-22-2009, 03:02 PM | #8 |
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06-22-2009, 03:39 PM | #9 | |
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Drives: 2023 Hyundai IONIQ 6 SEL AWD
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06-23-2009, 01:14 PM | #10 | |
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Drives: 2011 M3 Coupe Mineral White
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06-25-2009, 03:59 AM | #12 |
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Drives: 2011 M3 Coupe Mineral White
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Yes. I removed mine on the first day of ownership and there are absolutely no issues other than a slight increase in throttle response.
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