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08-28-2009, 02:59 PM | #1 |
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Differences between Euro air filter and aftermarket filters?
The Euro air filter isn't oiled, correct? If that's true, what's the difference between the Euro filter and the other dry filters on the market? I could get the Euro filter for $52 on ecstuning.com.
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08-28-2009, 03:08 PM | #2 | |
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A euro filter will not fit on a US car and will need a new button machined - like what AA is doing.
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08-28-2009, 06:02 PM | #3 | |
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The other two differences are: a) The modified OE Euro paper filter (that AA sells) is more restrictive than the dry high-performance aftermarket air filters on the market now. Non-oiled (dry) aftermarket air filters use multiple layers of cotton gauze material to filter out contaminates. The dry aftermarket air filters are slightly less restrictive to air flow. They increase the air flow by approx. 50% over the stock paper filter. But...there is a slight downside to using the dry aftermarket air filters. They allow more dust to pass into the engine. b) The modified OE Euro paper filter cannot be reused, while the dry aftermarket air filters can be washed and re-used for years. (you never have to buy another replacement) There are many pros and cons to consider, when deciding on which dry air filter you want to buy.
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09-01-2009, 11:30 AM | #4 | |
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True, but there is a point of diminishing returns. The Euro filter dramatically outflows the charcoal impregnated US filter. No?
I believe there may be a 1-2HP increase by using the reuseable gauze based filtration. But, you do pass more dust. Is this worth it? Especially considering you get the majority of the available gain from the Euro filter?? Quote:
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09-01-2009, 11:36 AM | #5 |
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Do you happen to have any pics of the two side-by-side and unmodified? I'm wondering if this is something I could do myself as opposed to paying for the AA one. Thanks either way for the info!
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09-01-2009, 11:48 AM | #6 | |
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Nope (by a long shot) . Especially on an expensive engine like ours. I'd switch to the AA stock replacement if you're concerned with those few ponies . |
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09-01-2009, 11:57 AM | #7 | ||
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I cannot post a DIY on a competitors product, sorry. Quote:
A properly oiled filter is perfectly safe, there's nothing to be paranoid about. The filters are the biggest (proven) bang for the buck mod for your M3.
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