help! air intake options for D's

Alex.Devol · 07-22-2012, 12:46 PM

Been really searching hard the last few weeks for an air intake / open air filter which is going to be compatible with the N57 engine. I have quite a limited understanding on what makes an air filter compatible with an exact model, but since there are no real model-specific options out there for the diesel BMW's i've been looking at universal stuff.

Any opinions or advice on the following would be really appreciated:

K&N apollo

http://www.knfilters.com/universal/apollo.htm
http://www.larkspeed.com/index.pl?a=i&k=s&p=338RC5052AL

Bullydog RFI

http://intakesystems.com/p-175-bully...ir-filter.aspx

Im looking mainly for improved sound, but obviously improved performance is going to be a + and heatsoak is going to be a - .. if either are going to be potentially damaging then thats a big - so a heads up would be great!
Any advice on how much of either i can expect would be great!

also my car is a 325d, if i find a filter advertised for a 335d what stops that being compatible with mine, other than maybe space in the engine bay?

thanks in advance to anyone who can help.

Sensible_ · 07-22-2012, 12:56 PM

I have used K&N filters for years and had no problems, gains are very very slight in myo but its not like they cost a bomb.

Some people complain the K&N filters screw up the MAF sensor due to the oil in them but this has never been an issue for me. Cant answer any of your other queries though.

07-22-2012, 12:46 PM	#1
Alex.Devol First Lieutenant 25 Rep 329 Posts Drives: BMW E92 M-Sport LCI Join Date: Jun 2012 Location: Lancashire iTrader: (0)	help! air intake options for D's Been really searching hard the last few weeks for an air intake / open air filter which is going to be compatible with the N57 engine. I have quite a limited understanding on what makes an air filter compatible with an exact model, but since there are no real model-specific options out there for the diesel BMW's i've been looking at universal stuff. Any opinions or advice on the following would be really appreciated: K&N apollo http://www.knfilters.com/universal/apollo.htm http://www.larkspeed.com/index.pl?a=i&k=s&p=338RC5052AL Bullydog RFI http://intakesystems.com/p-175-bully...ir-filter.aspx Im looking mainly for improved sound, but obviously improved performance is going to be a + and heatsoak is going to be a - .. if either are going to be potentially damaging then thats a big - so a heads up would be great! Any advice on how much of either i can expect would be great! also my car is a 325d, if i find a filter advertised for a 335d what stops that being compatible with mine, other than maybe space in the engine bay? thanks in advance to anyone who can help.
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07-22-2012, 12:56 PM	#2
Sensible_ Colonel 529 Rep 2,504 Posts Drives: 2008 E90 Join Date: Feb 2012 Location: London iTrader: (1)	I have used K&N filters for years and had no problems, gains are very very slight in myo but its not like they cost a bomb. Some people complain the K&N filters screw up the MAF sensor due to the oil in them but this has never been an issue for me. Cant answer any of your other queries though.
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