[F87source]

Originally Posted by ///M TOWN

Who do you think makes the best drop in ?

Don't they need to be a dry filter ?

Not sure why people hate K&N

Stock is the best.


Intake filters were only a restriction on the non M sport package n55's where bmw put a thick cotton or charcoal layer on the bottom of the filter to improve filtration:

Non M sport pack filter: https://www.ecstuning.com/b-mann-par...718616909~man/

M sport pack and M2 filter: https://www.turnermotorsport.com/p-2...30-335i-335xi/


If you look at the images the filter in the m2 is the non charcoal layer version so it has all the restriction removed. So those dyno charts you see with high flow drop in filters are likely to be compared against the charcoal variant filters so you see a gain there. While in reality there will be no gain on a stock filter vs. a drop in "high flow filter" (so just a sneaky tactic to try and show power gains) : this thread (https://f87.bimmerpost.com/forums/sh....php?t=1661597) proves it post #11.

[lnsaneM]

Originally Posted by F87source

No these cars have a much more advanced ecu vs subarus so no need to tune, the ecu will adapt. However that being said some intakes can cause rough idles so you might need to get the maf tables rescaled if that happens to you.

that being said I came from sti's too and I do not miss the $900 protunes for every single mod.

How about changing intakes on s55 already flashed to bootmod3 91 stage 1 outs. Can just replace and not worry about anything?

[F87source]

Originally Posted by lnsaneM

How about changing intakes on s55 already flashed to bootmod3 91 stage 1 outs. Can just replace and not worry about anything?

Depends on how sensitive your maf sensors are. From what I have seen the s55 is not as problematic as the n55.

[GoneIn4Secs]

Originally Posted by F87source

Stock is the best.


Intake filters were only a restriction on the non M sport package n55's where bmw put a thick cotton or charcoal layer on the bottom of the filter to improve filtration:

Non M sport pack filter: https://www.ecstuning.com/b-mann-par...718616909~man/

M sport pack and M2 filter: https://www.turnermotorsport.com/p-2...30-335i-335xi/


If you look at the images the filter in the m2 is the non charcoal layer version so it has all the restriction removed. So those dyno charts you see with high flow drop in filters are likely to be compared against the charcoal variant filters so you see a gain there. While in reality there will be no gain on a stock filter vs. a drop in "high flow filter" (so just a sneaky tactic to try and show power gains) : this thread (https://f87.bimmerpost.com/forums/sh....php?t=1661597) proves it post #11.

M2 sport vs non,

Is this the one where the speed limit set to 186mph vs 155mph?

[F87source]

Originally Posted by GoneIn4Secs

M2 sport vs non,

Is this the one where the speed limit set to 186mph vs 155mph?

No m2 and m performance and mppk models have the non charcoal filter version.


The stock sport line f30 n55 has the charcoal filter. Also maybe really dusty climate cars have them too.


The m2's n55 has the pinnacle of bmws n55 technology, best possible air filter, and best possible air bok design with the cut out bottom silencer section.

[///M TOWN]

Originally Posted by F87source

No m2 and m performance and mppk models have the non charcoal filter version.


The stock sport line f30 n55 has the charcoal filter. Also maybe really dusty climate cars have them too.


The m2's n55 has the pinnacle of bmws n55 technology, best possible air filter, and best possible air bok design with the cut out bottom silencer section.

I am assuming you meant air box, correct?

[F87source]

Originally Posted by ///M TOWN

I am assuming you meant air box, correct?

Yes sorry air box. The silencer section to be exact.

[///M TOWN]

Originally Posted by F87source

Yes sorry air box. The silencer section to be exact.

Interesting Dinan leaves the bottom of the stock air box and replaces the top to get more room for their larger filter

I do like the look of their intake just hard to say if makes ANY improvements in power over the stock air box

[mpolissky]

Originally Posted by F87source

There are 3D printable files for air scoops if you want one for free. IIRC it is on thingaverse.

Do you have the ling to where I can order these?

[F87source]

Originally Posted by mpolissky

Do you have the ling to where I can order these?

Not anymore. The original creator has removed the free access link and has it for sale now so I cannot share the file I have anymore.

[mpolissky]

Originally Posted by F87source

Not anymore. The original creator has removed the free access link and has it for sale now so I cannot share the file I have anymore.

thanks man I'd buy these from him, where can I find this guy?

[F87source]

Originally Posted by mpolissky

thanks man I'd buy these from him, where can I find this guy?

I have no idea, but I found this guy who has made one for the F30 (it should also fit the m2 - idk about the m2c though), and he posted the file up for free:

https://f30.bimmerpost.com/forums/sh....php?t=1933782

[Bee Pee]

Have a look at the link in my post #2 in the thread linked below

https://f30.bimmerpost.com/forums/sh....php?t=1311060

Based on my 1st hand experience with "fettling" n55 in my F20 M135i n55