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Help K&n Air Filter
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02-08-2012, 08:30 PM | #1 |
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Help K&n Air Filter
hey guys i need help on getting a K&N air filter. I have a canadian e90 323i and based on the posts the filter should be a rectangle with a slant on one side making it almost triangular. If this is right please tell me the part number. everytime i go on the website or lordco or this other auto parts they tell me its the cone until they look under the hood then when they try to cross reference it they can't find the part. Please tell me the part number or maybe where you got yours so that i can send the info for it to be cross referenced and what shape yours is cuz im sure mines not a cone.
Thanks in advance for your time
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2008 E90 Wrapped Matte Black & Carbon Fiber Roof, 19" Staggered Miro 111(Satin Black), Black Housing Halo Projectors, Satin Black Grill, Blacked Out Emblems, MTX Thunder Sub with Alpine Amp, K&N Air Filter, BMS PBX
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02-08-2012, 10:09 PM | #3 | |
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I have been using them for 20+ years on all sorts of cars including BMWs. I have never had any of the bull crap 'issues' of soiled MAFs, blah blah blah. I use them not for performance, but for the fact that I can buy one filter and use it till I sell the car, usually at 250,000+ To actually answer the OP's question, Its 33-2332 if its the rectangular one and E2022 if its a round filter. Check your original to see which shape it is.
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02-08-2012, 10:17 PM | #4 | |
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02-08-2012, 10:55 PM | #5 |
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K&N filters do NOT allow more dirt in - please research the subject before miss leading fellow members.
From K&N Web Site 24. More airflow means you are letting more dirt through, right? No. Filtration testing measures the percentage of dust retained before the filter reaches a terminal test pressure, often 10" of restriction above initial restriction. We use airflow as a simplified term to explain a more complicated physical process. The more precise description is restriction: K&N air filters create less restriction which helps an engine run better. An engine will only use the air it needs and our air filters do not result in an engine using more air than necessary. Rather, they result in the engine experiencing less restriction. The terms airflow and restriction are inversely related. Our air filters provide either less restriction at a fixed airflow rate; or more airflow as a fixed level of restriction. In neither case is more air being used than necessary. Ref: http://www.knfilters.com/faq.htm#24 I have been using K&N for over 20 years and never had any problems. I even use them in my Hayabusa Motorcycle that sucks in a lot of air when its pulling 11k RPMS. |
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02-08-2012, 11:01 PM | #6 | |
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02-08-2012, 11:15 PM | #7 | |
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2008 E90 Wrapped Matte Black & Carbon Fiber Roof, 19" Staggered Miro 111(Satin Black), Black Housing Halo Projectors, Satin Black Grill, Blacked Out Emblems, MTX Thunder Sub with Alpine Amp, K&N Air Filter, BMS PBX
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02-09-2012, 12:16 AM | #8 |
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Compared to the AC Delco filter, the K&N“plugged up” nearly 3 times faster, passed 18 times more dirt and captured 37% less dirt....
http://www.nicoclub.com/archives/kn-vs-oem-filter.html
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If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger
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02-09-2012, 01:33 AM | #9 | |
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I read that too a while back, then come to find out the guy represents AC Delco so sounded bias in the end. I have seen other non bias test that reflected K&N trapped more dirt than paper due to the oil particles on the cotton filter. |
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02-09-2012, 07:08 AM | #10 | |
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Also, your E90 has two filters. One is permanent that is downstream of the primary filter. If you have too much oil or whatever, that will catch it. Still comes down to the fact that for $40 you have a filter that will last the rest of the life of the car. I have used them for 200k+ with no "dirty" problems on a crap load of cars.
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02-09-2012, 07:38 AM | #11 |
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Don't just look at K&N. Also look at BMC. I use them on everything from my race bike to my car. They are pretty awesome also. Take a look.
http://www.bmcairfilters.com/index.aspx |
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02-09-2012, 01:31 PM | #12 | ||
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If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger
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02-09-2012, 04:41 PM | #13 | |
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02-09-2012, 04:44 PM | #14 | |
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http://www.bobistheoilguy.com/airfilter/airtest1.htm |
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02-09-2012, 05:07 PM | #15 | ||
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If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger
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02-09-2012, 05:28 PM | #16 |
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we all know there are no performance gains from it.....and this argument is 50/50 everywhere on the net....i just dont see the point of using K&N vs OEM German filter even if there is a slight possibility of it getting more dirt inside. You are not really saving time....if anything it will take much longer to clean and reoil filter then to just replace it with new. and then you are running that risk of oil dripping from filter....so whats the point ? to save a buck ?
same argument as motor oil.....i am sure all of you use nice synt. oil (i am)....why not dyno oil ? people run dyno oil for 150-200k miles without issues. (i used cheap dyno oil in Maxima for 160k miles...no issues) Last edited by Kolyan2k; 02-09-2012 at 06:05 PM.. |
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02-09-2012, 06:05 PM | #17 | |
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If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger
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02-09-2012, 06:21 PM | #18 | |
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A BMW is not just any old car, for whatever reason, BMW puts a Mahle Knecht in from the factory. It's simply amazing that someone thinks they can do BMW 1 better by jumping on amazon.com and getting a different filter for $40 that they can clean and reoil and use forever. It's like X-Files, "I want to believe." Well, it's your car, go ahead and drop that K&N bad boy right in there! |
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02-09-2012, 06:29 PM | #19 | |
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The place with the bench equipment was Testand. The test was ISO 5011 compliant. The test machine cost $285,000. The test normally costs $3,000 to do. Now don't you think K&N would be willing to pay $3,000 for an ISO 5011 test that would show their products namely air filters to be superior? |
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02-09-2012, 06:47 PM | #20 | |
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hell, anyone who uses less than neopentyl polyol ester MIL-L-23699E with a nominal viscosity of 5 centistokes at 100 Deg. C is just asking for trouble. All you people with your cheap synthetic motor oil and even cheaper dinosaur oil are lame </shift discussion to lame oil thread>
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E90 328i Sport & Prem // R52 MINI S JCW // X3 x35i 62 Mini Cooper 997 // 62 Vespa // Laphroaig 30-yr Last edited by monza2t; 02-09-2012 at 07:39 PM.. |
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02-09-2012, 07:13 PM | #21 | |
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If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger
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02-09-2012, 07:38 PM | #22 |
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yeah, the sand got though to my vagina through the K&N, then I got yeast infection because of the dinosaur oil lube.
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