320d K&N cold air intake.

[Mackers]

I Was just wonder what peoples thoughts are on this

http://www.bennetts.com/kn-apollo-universal-closed-intake-systems/kn-57a-6042-performance-intake-kit-bmw-320d-e90-e91-20d-163bhp-2218162-418330-832529.php

I know I can get the direct replacement K&N filter that's good but I will be getting the centre box removed soon and was thinking this might help add some more growl behind the sound as well as the performance increase.

http://youtu.be/UnmFNe1cC6g

[Gar]

Thats not a good sound at all man sorry

[Valdelisbmw]

this one in picture definitely not cold air intake ,and no performance .its probably even worst as was oem air box ,as it will get only very hot air . im nearly sure u dont need anything more difficult - fancy stuff for more power . the good replacement K@N filter would be perfect ,the only performance in this style filter is - sound ,and it might be annoying u in near future . get de-cat if its not fitted yet ,and its very difficult to get nicer sound from diesel .i m really happy with Eisenmanns exhaust on my E39

[Mackers]

Exactly the feedback I needed thanks Valdelis.

I'll stick with the K@N filter then.

If I decat with no mid box or rear silencers, will I get pigeons living in the exhaust though ?

[Valdelisbmw]

diesel exhaust is little different as petrol , it wont make much difference in sound .i have never tried my self so cant say what it will sound :wink: but de-fat would be - must

[Mackers]

Any effect on nct, ?

[Valdelisbmw]

nothing for NCT ,even if rules will change in one or few years ,u can fit it back anytime

[Mackers]

Cool, I'll get the centre box done first then see how it is, it will probably be done though, thanks for the info

[John_D]

Sorry but that sounds awful IMO. You have a lovely refined BMW, I can't understand why you'd want to make it sound louder like an old tractor.

Performance exhausts and induction only belong on petrol engines IMO.

Just my 2c..

[Mackers]

I know what you mean but I have heard some diesels sound amazing.