Delete cvharcoal filter and add K&N Filters

mjposner · 11-26-2016, 07:18 AM

Any one do this here and was it worth it?

Thanks

Bobby_Drake · 11-26-2016, 01:53 PM

It's probably over 6 months now since I removed the charcoal filters and install K&N filters. Honestly, not sure I feel much of a difference. MPG is essentially the same as well. Fairly easy to remove the charcoal filters tho. Some guys from the M5 forum say they feel a little bit of performance gain.

wujekwaldus · 11-27-2016, 11:50 AM

everything is the same, performance, fuel consumption, nothing has changed. not worth.

devondragon · 11-28-2016, 08:34 AM

I did it, one torx screw was a pita, but honestly the whole thing was pretty fast. I *feel* like I hear more turbo spool noise and maybe a little more oomph on the butt dyno, but I can't swear to it. I would do it again.

S800vxr · 11-28-2016, 03:59 PM

Don't use K&N as the filter oil melts with the high temps and goes onto th MAFs and fucks them up! Been told to use OEM filters and I do and still hit 752hp on the dyno so they work just fine.
BTW don't buy MAFs from BMW as you can get the same exact item for a 1/3rd of the price direct from Bosch.

11-26-2016, 07:18 AM	#1
mjposner Brigadier General 898 Rep 3,071 Posts Drives: 2020 Z4 40i Join Date: Mar 2011 Location: Southwest Florida iTrader: (3)	Delete cvharcoal filter and add K&N Filters Any one do this here and was it worth it? Thanks __________________ Previous BMW: 16 M4, 13 M6; 14 M235i, 12 BMW M3; 11 BMW M3; 08 BMW M3; 08 BMW Z4M; 04 X3; 02 M3 Convertible; 02 M3; 00 M Roadster; 94 325 convertible; 92 325i Convertible; and 85 635csi My Car Photo Blog: http://carfisheye.blogspot.com/
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11-26-2016, 01:53 PM	#2
Bobby_Drake Major 389 Rep 1,152 Posts Drives: '16 X5M Join Date: Oct 2012 Location: San Diego, CA -> Honolulu, HI iTrader: (0)	It's probably over 6 months now since I removed the charcoal filters and install K&N filters. Honestly, not sure I feel much of a difference. MPG is essentially the same as well. Fairly easy to remove the charcoal filters tho. Some guys from the M5 forum say they feel a little bit of performance gain.
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11-27-2016, 11:50 AM	#3
wujekwaldus Private First Class 118 Rep 126 Posts Drives: 458,Huracan Spyder,G500 Join Date: Oct 2012 Location: Warsaw iTrader: (0)	everything is the same, performance, fuel consumption, nothing has changed. not worth.
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11-28-2016, 08:34 AM	#4
devondragon Lieutenant 153 Rep 427 Posts Drives: 2019 M5 Competition Join Date: Oct 2011 Location: Boulder, CO iTrader: (0) Garage List 2014 BMW M6 Coupe [8.50]	I did it, one torx screw was a pita, but honestly the whole thing was pretty fast. I feel like I hear more turbo spool noise and maybe a little more oomph on the butt dyno, but I can't swear to it. I would do it again.
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11-28-2016, 03:59 PM	#5
S800vxr Private 12 Rep 78 Posts Drives: F13 M6 Coupe Join Date: Apr 2015 Location: UK iTrader: (0)	Don't use K&N as the filter oil melts with the high temps and goes onto th MAFs and fucks them up! Been told to use OEM filters and I do and still hit 752hp on the dyno so they work just fine. BTW don't buy MAFs from BMW as you can get the same exact item for a 1/3rd of the price direct from Bosch.
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