03-26-2020, 05:30 AM | #1 |
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M340i - aftermarket drop in air filter
Have always used aftermarket filters on my petrol cars - tended to be K&N although I went for BMC on my motorbike.
Thinking of getting one for the M340 but I'm aware of how the oiled ones can affect MAF etc. Looking at a dry one from AFE instead - https://afepower.com/afe-power-31-10...y-s-air-filter I figure that would be safer. I realise there isn't a huge performance gain though... Thoughts? Cheers! |
03-26-2020, 07:39 AM | #2 |
The artist formerly known as AC Schnitzer UK
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The opinion of AC Schnitzer is that intake systems on current model BMWs are already very efficient, and there is little if anything to be gained from changing them. Even on cars with a performance upgrade.
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possible335i2008165.50 |
03-26-2020, 08:47 AM | #3 |
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Personally I think there is little if anything to be gained from after market filters these days, and some may even be detrimental. At a slight tangent - Honda Blackbird motorbikes without fail run like a pig with a K&N installed unless backed up by a rolling road session to tune the engine to match the filter. Disturbing the air intake volume in any engine is changing a basic paramater so any change is likely to have an effect of some sort.
Aftermarket filters tend to be noisy as well - some like it...not for me!! |
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03-26-2020, 09:23 AM | #4 | |
The artist formerly known as AC Schnitzer UK
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Quote:
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Seaford1124.00 |
01-05-2022, 05:23 PM | #5 | |
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The performance gains might be minimal, but perhaps there's some better gas mileage to be had, as well as better throttle response. Only one way to find out, and if you don't like it, it's pretty easy to switch back to an OEM paper filter.
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'22 BMW M340i xDrive | Dravit Grey | Tacora Red Interior | Shadowline | M Suspension | 19" 791 Wheels
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01-06-2022, 01:22 AM | #6 |
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Waste of time for reasons Lorcan said.
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Current: 2021 G21 330i M-Sport Previous: 2018 A6 Avant S-Line MMI+, 2014 F31 320d M-Sport, 2013 F10 520d M-Sport, 2011 F10 530d M-Sport, 2008 320i M-Sport Coupe, 2002 325i, 2001 318i valvetronic, 1998 318i, 1996 525i, 1990 Porsche 944S2 |
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01-06-2022, 04:17 AM | #7 |
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Unfortunately nothing is free in this life, whilst an aftermarket filter may flow more air, its usually to the detriment of filtration. Then its down to whether the engine can utilise the extra air etc.
is the M340i too slow? |
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