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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today! |
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09-27-2012, 02:10 AM
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#1 |
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Registered User
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K&n air filter letting in more dirt particles?
Does anyone have specs on aftermarket air filters micro filtration size holes compared to stock more restrictive filters? The way i see it is a cone design filter has more surface area so it could possibly gain flow that way but why does a stock replacement k&n give hp gains unless it is just filters less? Oiling filters may help slightly but the air isn't traveling through the oil anyways.
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09-27-2012, 02:38 AM
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#2 |
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Registered User
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K&N filters are frowned upon over here. Oiled filters are bad for our MAF's.
__________________
 -2003 M3 Vert -1967 Mini Cooper |
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09-27-2012, 04:22 AM
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#3 |
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Registered User
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So what you think about any aftermarket filter that gains power. Just dont worry about a little bigger particles coming in cause its worth the power and something else will fail first?
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09-27-2012, 10:17 AM
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#4 |
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Hmm...well I'm sure you'll get PLENTY of replies about high flow filters/intakes. Everyone has their opinion. Mine is...I have a KNN intake system, and it gave me A LOT of problems at first. Turns out my car doesn't like the KNN system without the screen fitting that goes into the intake elbow, it also doesn't like the filter oil ether. The MAF acts all retarted when it sniffs the oil. However, if I oil the filter correctly and allow it to SET IN CORRECTLY and make sure the screen fitting is in the elbow, I do notice gains of power (not much) but I mainly keep it on for the sound. Also my gas mileage goes up. So it's debatable, I know the stock one is engineered pretty good. My KNN came on the car when I bought it, and I have the stock one as well. Just my 2 cents.
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09-30-2012, 02:55 AM
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#5 |
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Thanks. Im not sure what elbow screen u are talking bout though. Does it come with kit? Does it filter or just create diff airflow inside intake tube?
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09-30-2012, 08:56 AM
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#6 |
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Registered User
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I would look at one of the aFe panels that is oil free or somthing similar that avoids the oil issue. I've heard good things about most of those, but the gains are minimal and if its a full intake be careful it doesn't lose power by sucking hot air from the engine bay.
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09-30-2012, 09:07 PM
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#7 |
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Registered User
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Ok. I wouldnt bother changing intake tube unless cold air intake. Wish i could build a ram air from fog light hole. Thats alot better than those electric fans ive seen on ebay. Prob would actually slow the airflow down at high rpm from fan drag. Haha
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09-30-2012, 09:13 PM
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#8 |
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Registered User
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What kind of oil filters are you guys running?
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10-02-2012, 06:24 PM
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#9 |
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Registered User
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The OEM intake system is very hard to beat! When I had my stock intake system, it was all stock, and it made the most HP, and ran the smoothest! I did see some HP pickup with those intake scoops you can get on ebay for $50 or so....
__________________
2001 M3, LSB 6spd, purchased 6/09 with 25K miles.
 Mods: Evolve Airbox & Tune, SGT swaintech coated headers, OEM Euro Cats, Larini exhaust, 3.91 gears, Turner Pulleys, TCKline S/A coilovers, H&R front sway Bar, Rear Sway Bar, RE Strut bar, PowerFlex RTAB's, Apex ARC-8's, subframe reinforcement, Laser Int:thumbsup2: |
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10-02-2012, 10:13 PM
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#10 |
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Registered User
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I havent seen any ram air kits. Are there any or would i have to build? I want ram from foglight hole of course
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