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2Addicts | BMW 2-Series forum Technical Topics N20 (228i) / B46 (230i) Engine, Transmission, Exhaust, Tuning K&N drop in filter?

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      01-22-2020, 11:04 AM   #1
BelugaaF22
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K&N drop in filter?

Do you all recommend putting a K&N drop in filter into my stock intake? Would the dealer have any problems with this? Or is aftermarket intake more preferred (Injen, etc.) Thanks all
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      01-22-2020, 11:53 AM   #2
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K&N drop in will give you the same result ( sound / air flow ) as an dedicated cold air intake on the N20 with the added advantage that you can always put the stock filter in so you can still use the car while the K&N is drying after you wash it / re-oil.

Only real reason to spend 10 times more money for a CAI is under the hood bling, if you go to car events and this kind of thing matters to you.
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      01-23-2020, 12:10 AM   #3
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ok I see, makes sense. so K&N would be an upgrade to the stock? Not really into that hood bling but definitely want more airflow to the engine.
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      01-23-2020, 09:48 AM   #4
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It is, but minimal, nothing you would feel. Something like 2-4 hp.
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      01-23-2020, 10:22 AM   #5
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Check out AWE too, I have one in my F31 328 been very happy with it.
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      01-23-2020, 06:10 PM   #6
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Quote:
Originally Posted by BEM-S4 View Post
Check out AWE too, I have one in my F31 328 been very happy with it.
i saw the AWE S-FLO intake however I am not sure that price of 1k would justify it for me
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      01-23-2020, 06:12 PM   #7
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Quote:
Originally Posted by BelugaaF22 View Post
Quote:
Originally Posted by BEM-S4 View Post
Check out AWE too, I have one in my F31 328 been very happy with it.
i saw the AWE S-FLO intake however I am not sure that price of 1k would justify it for me
No just the filter!

Any intake "upgrade" is cosmetic bullshit on an N20.
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      01-24-2020, 11:48 AM   #8
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Quote:
Originally Posted by ngl View Post
It is, but minimal, nothing you would feel. Something like 2-4 hp.
+1


If you are looking for sound, get the Injen intake.

If you are only interested in power, K&N is a good choice but do not expect any significant gains
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      01-24-2020, 01:30 PM   #9
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Quote:
Originally Posted by BEM-S4 View Post
No just the filter!

Any intake "upgrade" is cosmetic bullshit on an N20.
sounds good Ill give it a try!
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      01-24-2020, 02:45 PM   #10
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Quote:
Originally Posted by BelugaaF22 View Post
sounds good Ill give it a try!
I am sorry I lied to you, I meant AFE not AWE. See below for link. I was going to do K&N but the performance guy at my dealer said they tend to be over-oiled and he prefers AFE. He knows way more than I do so I took his word for it.

https://x-ph.com/afe-power-magnum-fl...6-228-328-428/
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      01-24-2020, 05:48 PM   #11
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Does anyone have a YouTube video on the K & N? Kinda interested now, before was considering the injen but this sounds promising and easier + cheaper.
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      01-27-2020, 03:10 PM   #12
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Quote:
Originally Posted by BEM-S4 View Post
I am sorry I lied to you, I meant AFE not AWE. See below for link. I was going to do K&N but the performance guy at my dealer said they tend to be over-oiled and he prefers AFE. He knows way more than I do so I took his word for it.

https://x-ph.com/afe-power-magnum-fl...6-228-328-428/
This should'nt have a problem passing those dang emissions in CA right?


Sunsets: I havent found a video yet.
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      01-27-2020, 03:54 PM   #13
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Quote:
Originally Posted by BelugaaF22 View Post
Quote:
Originally Posted by BEM-S4 View Post
I am sorry I lied to you, I meant AFE not AWE. See below for link. I was going to do K&N but the performance guy at my dealer said they tend to be over-oiled and he prefers AFE. He knows way more than I do so I took his word for it.

https://x-ph.com/afe-power-magnum-fl...6-228-328-428/
This should'nt have a problem passing those dang emissions in CA right?


Sunsets: I havent found a video yet.
I cannot imagine it would be an issue but mike@x-ph.com can confirm he's the pro.
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      01-27-2020, 07:11 PM   #14
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Quote:
Originally Posted by BelugaaF22 View Post
Do you all recommend putting a K&N drop in filter into my stock intake? Would the dealer have any problems with this? Or is aftermarket intake more preferred (Injen, etc.) Thanks all
My indy performance shop recommended a BMC filter over the K&N and after some research it did appear that the BMC was better made. I have had K&Ns in previous BMWs and they all passed smog. Oh, another reason for the BMC, my last name ends in vowel and the BMC is made in Italy.
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      01-29-2020, 11:12 AM   #15
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Thanks all for your input!
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      02-14-2020, 12:34 PM   #16
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Intake mods are probably one of the worst places to spend, in terms of performance-per-dollar. If you want more airflow, I think you'd be far better off going to a mild aftermarket tune-box like a jb4, or Dinan if you want to retain warranty - these boost turbo output far more than a modest reduction in intake drag will.
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      02-14-2020, 05:52 PM   #17
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+1
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