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Senior Member I
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Joined: 14-April-2004
Location: Oswald Penitentiary
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Points: 112 		Direct Link To This Post Topic: Performance air filter E39 540i
    Posted: 04-August-2004 at 21:30
you'll not be too fond of the induction phroar from a CSL then..

I agree, a complete waste of money, and a sure fire route to dirtying & affecting the signal on your air-mass-meter.. a direct CAI (cold air intake) is probably a better option from the likes of gruppeM for some positive hp gains at speed caused by the ram-air effect.. you're looking at maybe 2bhp at 120mph
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Andy K

Joined: 15-May-2004
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Points: 874 		Direct Link To This Post Posted: 27-July-2004 at 18:26
hi i have just tryed a kn induction fillter on my 535 took it back off after weekend total waste of cash no gains that i could feel just noise and to much of it plus a slight flat spot but then you might like the sound i for one did not i did not buy my BMW to make it sound like an xr3i
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Joined: 26-June-2003
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Points: 1344 		Direct Link To This Post Posted: 21-July-2004 at 23:22
It depends if you are talking about a replacement filter element which fits inside the existing air filter box or a replacement induction kit ? As far as i know a replacement filter won't give any power gains and most of the induction kits can actually reduce performance !


Miles

1991 525i Sport Manual


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Joined: 30-April-2004
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Points: 19 		Direct Link To This Post Posted: 21-July-2004 at 23:18

Does anyone out there have any experience with the above.  A colleague of mine has just fitted a K&N filter to his 2001 330Ci and he says he can feel the difference.

Questions

Do they work?

Would I notice power gain on the 286bhp or is it torque increase?

What are the downsides?  I couldn't cope with worse fuel consumption!

cheers all

 
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