knn air filter
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Joined: Oct 2008
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From: Orange County, SoCal
My Ride: 2006 M5 with many mods....
Originally Posted by BET530' post='768122' date='Jan 14 2009, 04:01 PM
looking for a cheap mod, does a knn air filter really make a difference in hr ????
Hell no it doesn't. But, you can pick up RPI scoops and BMC filter combination from Trinity Autosport (site vendor) that has verified, dyno evidenced HP gains for the same price or even LESS than any other "pretender" (aFe, K&N, etc.) systems!!
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From: Thousand Oaks, California
My Ride: 2008 550i Jet Black on Black Leather, SAT with Paddles, Logic 7, Comfort Seats, NAV, Sport Package, PDC, Xenons, Sirius, Trinity 12W LED Angel Eyes, RPi GT Exhaust, M rear spoiler, ACS Roof Spoiler, Tinted Tail Lights, Bimmian Carbon Fiber Pillar Trim, Bimmian Shadow 550i emblem, RPi Scoop, E60 Forum Cling, Mtec bulbs in fog lights, Mtec 2W LED for License Plate Light Bulbs, K&N Filter, Bimmian LED Smoked Side Markers, Blackout roundels, Carbon Fiber Kidney Grills.
Retired Rides - 1989 325i convertible, 1995 M3, 2002 X5, 2005 545i, 2008 X5 (Lemon)
Originally Posted by brabusw209amg' post='768134' date='Jan 14 2009, 04:18 PM
Dinan uses K&N....i wonder why
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Joined: Oct 2006
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From: Anaheim, CA
My Ride: F13 M6
BMC and K&N filter will let the engine breather better no doubt about that. some prefer the BMC over the K&N just because of the surface area, but both are good filters and we can get either one 
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From: Sleaford, Lincs, UK
My Ride: E60 530d M-Sport
Sorry to be a stick in the mud, but unless you got something like a turbo charged super Skyline you probably wont see a difference, without other serious mods, my E34 is seriously modded and all a K+N panel filter ( and Cone ) did was add power up top where it was no use anyways, whilst robbing torque and BHP in the lower revs.........I have Dyno sheets to prove if anyone is really that interested 
Thats not to say some cars might benifit but I seriously doubt your BMW will............IMHO and experience of course
So whilst you may find 2hp it will probably be right up at red line where you dont drive in the real world anyways..................
Thats not to say some cars might benifit but I seriously doubt your BMW will............IMHO and experience of course
So whilst you may find 2hp it will probably be right up at red line where you dont drive in the real world anyways..................
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From: B-Ham, AL
My Ride: '06 550i
'84 Nissan S12 Turbo
Only advantage I see is that it would pay for itself after a couple of cleanings....not sure how much or how often the OE filter needs to be changed, but I'm guessing 25-30 bucks? K&N panel filter is like $55
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