'Increased Emissions Warning' after k&n filter install
11-11-2008 | 11:50 AM
#1
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Joined: Aug 2008
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From: New Orleans, LA
My Ride: 2005 Jet Black 545i w/ sport pkg, nav, HUD
I deleted the charcoal filter and installa k&n filter about 2 weeks ago. I got the 'increased emissions warning about 7 days ago. I switched back to stock for about a day and the code didn't clear. I brought it in to BMW today and the y told me it was 'getting too much air.' They think it's a bad valve somewhere. I did a search and couldn't find anything. Any ideas? Has anyone else gotten error codes from a K&n filter?
thanks,
will
thanks,
will
11-11-2008 | 12:09 PM
#2
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From: Vancouver, BC
My Ride: See sig :)
I got the same message, after about 1 or 2 i installed the kn filter and charcol delete. It went away after a week. Got it once again after that, but it was because of a faulty gas cap...
11-11-2008 | 02:34 PM
#4
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Joined: Oct 2007
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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)
I've done the same Mods and have had NO error messages, so perhaps it is something else coincidentally?? 
Good Luck with the diagnosis! 
Good Luck with the diagnosis!
11-11-2008 | 02:49 PM
#5
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From: New Orleans, LA USA
My Ride: E90 M3
Model Year: 2011
Will, I had the same warning on my old 545 but did not have the K&N filter. It turned out to be a bad seal on the gas cap allowing air into the tank. Message was sporadic so hard to diagnose. At first Peake said I wasn't tightening the gas cap properly...
11-11-2008 | 06:50 PM
#6
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From: New Orleans, LA
My Ride: 2005 Jet Black 545i w/ sport pkg, nav, HUD
thanks for the replies. I'll let y'all know what the problem was. I'm also getting the trim around the ignition replaced b/c it's peeling. Thedealer was nice enough to give me a loaner, even though I didn't purchase the car from them. They gave me a little bit of a hard time, but i just told them that they gave me a loaner car last time I brought it in for service. The SA looked it up to verify that i did indeed get a loaner car in the past and OK'd the loaner . I think the loaner car policy is dumb to begin with!
will
will
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