K&N Air Filters oppinions please

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andy & fonz
Joined: Tue 28 Jul, 2015 18:35
Posts: 44

  Z3 roadster 2.2i

K&N Air Filters oppinions please

Post by andy & fonz » Wed 13 Jan, 2016 10:42

Hi
is it worth fitting a K&N filter induction kit or just the replacement filter that fits in the air box, or any other type of performance filter, I know I would get more go by leaving the spare wheel and tool kit at home and maybe losing half my beer belly, but maybe there are. other gains to be had. thinking of fitting one to my 2.2.
thanks for the feedback
Andy

Del
Joined: Sat 19 Nov, 2011 18:35
Posts: 2115

  Z3 roadster 1.9

Re: K&N Air Filters oppinions please

Post by Del » Wed 13 Jan, 2016 11:26

Don't waste your hard earned money. Better off never keeping spark plugs beyond 20,000 miles and sticking some injector cleaner through the fuel system. :D

https://www.youtube.com/watch?v=WQN-0zvZNbY

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BladeRunner919
Joined: Fri 17 Feb, 2012 20:18
Posts: 2220

  Z3 roadster 1.9

Re: K&N Air Filters oppinions please

Post by BladeRunner919 » Wed 13 Jan, 2016 12:48

Neither. Unless you have any evidence to show that the engine can draw in more air than the filter can pass, you'll just be wasting money.

bertiejaffa
Joined: Fri 26 Jul, 2013 10:28
Posts: 1715

  M roadster S50
Location: Manchester

Re: K&N Air Filters oppinions please

Post by bertiejaffa » Wed 13 Jan, 2016 13:42

I have BMC air filter on mine - simply because it is what the BMW racing team use
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peter2b
Joined: Sat 01 Nov, 2014 18:47
Posts: 935

  Z3 roadster 2.2i
Location: cheshire

Re: K&N Air Filters oppinions please

Post by peter2b » Wed 13 Jan, 2016 21:12

I think I will pop in some redex seems to do the trick
peter2b

deni2s
Joined: Mon 25 Mar, 2013 22:02
Posts: 745

  Z3 roadster 2.8

Re: K&N Air Filters oppinions please

Post by deni2s » Wed 13 Jan, 2016 21:49

BladeRunner919 wrote:Neither. Unless you have any evidence to show that the engine can draw in more air than the filter can pass, you'll just be wasting money.
This. On positive side your engine sound will improve on higher revs.

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