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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > European air intake mod.



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      02-19-2011, 05:12 PM   #45
ciscovip
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so how does this stack up against the us version bmw performance setup. do not talk about the price difference because i now the bmw performance cost more. I am looking to see which is more responsive.
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      02-19-2011, 07:07 PM   #46
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+1

I was shocked to learn the Afe intake gave us a performance "loss". WTF

It seems the best intake everyone's been able to come up with is cutting out the charcoal filter of the OEM unit and now this European OEM unit?

Does the BMW Performance intake use the charcoal filter or is it replaced as part of the upgrade?

A dyno between the US OEM and the BMW performance intake would be nice.
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      02-19-2011, 08:07 PM   #47
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The us bmw performance intake uses the back part of the stock intake. I think that restricts the flow.
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      02-19-2011, 08:48 PM   #48
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Cool down Dude no one is saying you have to do anything. I am just looking for seat of the pants impressions to start.
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      02-20-2011, 08:23 PM   #49
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Sorry about the rant guys.. It was one of those verbal moments.

As for the 'seat of you pants' test, it makes a significant improvement over stock. It gives you more of those 'kick in the back' feelings what we all like so much.
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      02-20-2011, 10:15 PM   #50
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whats the story with this "Charcoal" thingy??? Something that needs to come out it sounds like for performance gain..
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      02-20-2011, 11:07 PM   #51
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whats the story with this "Charcoal" thingy??? Something that needs to come out it sounds like for performance gain..
Yeah, supposedly its there to prevent exhaust gases from backtracking through the intake to the outside, or something like that. In my opinion, I think it's a bunch of smog/emissions bs. Instead of ripping it out, I recommend that you make the switch to a euro box because, in the end, you'll be saving yourself a bunch of headaches. Take a look at the photos I posted of the old intake and the Euro one, you'll see what I mean. Good luck!
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      02-21-2011, 03:36 PM   #52
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ok to be clear im interested in this mod as well...might be the first thing i do to my new baby(well new preowned baby)...when i click the ecs link you guys posted it says for a 330i...this will fit on my 08 328xi correct?
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      02-21-2011, 11:35 PM   #53
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ok to be clear im interested in this mod as well...might be the first thing i do to my new baby(well new preowned baby)...when i click the ecs link you guys posted it says for a 330i...this will fit on my 08 328xi correct?
...uhh... If my dad is still watching this thread, he should be able to point you in the right direction. To my knowledge, the 330i and 328xi cpe have the same engine.

GOOD LUCK!!! Enjoy your 'new' ride! I also suggest that you get your local dealer to install the performance exhaust to make a much more significant improvement (I did exhaust first, then the intake).

Better yet, why don't you shoot him a pm (CobraMarty).
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      02-22-2011, 03:20 PM   #54
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good stuff here thanks for posting
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      02-22-2011, 04:07 PM   #55
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What does all this mean? EURO box with K+N filter flows 2.1% more air than stock box. 230HP = 2.1% more air flow + 4.8 HP, So I estimate a 5 HP increase. Sounds about right and the math backs it up.
This formula assumes that any increase in airflow corresponds to an exactly equivalent increase in HP - which I don't think is right at all...
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      02-23-2011, 07:53 AM   #56
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This assumption is based on 30 years of engine experience. If you can add 100% more, in as in a s/c or turbo (16 pounds of boost) you will get roughly 100% more HP. Obviously you need to know where the bottleneck is in the intake tract. Nothing is 100%, but I was showing how one can't expect any more than 5 HP with an air filter change, that is best case scenario, and that is what BMW, Dinan and others claim. 3-5 HP.
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      02-23-2011, 08:35 AM   #57
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LMAO, you guys are really looking to lay out $400 for a 5 HP max increase ? Unless your a race car driver that gain means dick.
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      02-23-2011, 09:46 AM   #58
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I heard that the carbon delete with k&n or the euro box will put me up near 335 #'s. Can anyone confirm this?
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      02-23-2011, 01:05 PM   #59
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Quote:
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I heard that the carbon delete with k&n or the euro box will put me up near 335 #'s. Can anyone confirm this?
assuming you have a 328i... i dont think a simple filter delete is same as a forced induction or make up for one. 335i is totally different car in a similar looking shell from 328i.

but im sure it will be that first step of getting closer to it. either way, any of these small bolt on mods will never get you near the 335i numbers.

all these mods are to enjoy the car a little more with whats given... not to be something else.
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      02-23-2011, 03:20 PM   #60
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Quote:
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I heard that the carbon delete with k&n or the euro box will put me up near 335 #'s. Can anyone confirm this?
You are talking about a 70HP INCREASE!! FROM AN INTAKE!!!

Last edited by bpas328xi; 02-23-2011 at 08:00 PM.
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      02-24-2011, 11:32 AM   #61
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Quote:
Originally Posted by bpas328xi View Post
You are talking about a 70HP INCREASE!! FROM AN INTAKE!!!
dont forget the +10 HP from putting the K&N sticker on your air box!
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      02-24-2011, 02:49 PM   #62
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dont forget the +10 HP from putting the K&N sticker on your air box!
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      02-24-2011, 02:58 PM   #63
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dont forget the +10 HP from putting the K&N sticker on your air box!
How much HP would some flame stickers get me?
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      02-24-2011, 03:59 PM   #64
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dont forget the +10 HP from putting the K&N sticker on your air box!
is this true?
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      02-24-2011, 04:48 PM   #65
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is this true?
Dude, you can't be serious.
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      02-24-2011, 04:49 PM   #66
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I think he is..
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