K&N Air Filter

[qimis]

I just got my car checked today and the mechanic said I need to change my air filter. I'm thinking might as well to go with the K & N cone air filter.

- Where did you guys get yours from ? and how much are they ?
- Should I get the heatshield too ?
- Do you have any recommendation for other brand / product ?
- Does it improve your performance ? (how much power increases ?)

ps: this is for 1989 325is - E30

[Erick]

Re: K&N Air Filter

- Where did you guys get yours from ? and how much are they ?
You can get K&N filters anywhere. They'll run you for about 30-50 bucks.

- Should I get the heatshield too ?
Most definetly.

- Do you have any recommendation for other brand / product ?
The regular airbox Mahle filter is great for me.... but that's not a cold air intake. In my opinion, intakes are for the noise only.

- Does it improve your performance ? (how much power increases
You'll never notice a change..... maybe 1-2 crank hp?

[KenC]

It's a waste of money. I had one a while back. I didn't notice any difference at all. The paper Mahle filter was tested against some 'high performance' panel filters and it outperformed them all.

[Super Eta]

I have a K&N filter...no difference at all..all show but no go i guess you could say.

I got one for free that was brand new pretty much out of box and one that was used for 35 shipped

[randomtask37]

http://www.r3vlimited.com/phpBB2/viewtopic.php?t=4079&highlight=filter

[nando]

this is why I bought a no name cone filter for my AFM swap. I'll probably replace it with something else later anyway!

[Erick]

It's a waste of money. I had one a while back. I didn't notice any difference at all. The paper Mahle filter was tested against some 'high performance' panel filters and it outperformed them all.

Enough said. Mahle filters aren't a biased opinion anymore. It's a proven fact 8)