Performance air intake questions/suggestions ?

chris82 · 10-16-2019, 04:52 PM

Quote:

Originally Posted by asbrr

Interesting that you mention there is a sound increase - is that from the Euro box or the intake hose? I heard the charcoal delete with the hose actually reduces sound if otherwise stock....so I guess the Euro box is what's resulting in the extra noise...

What kind of filter are you using in the Euro box?

Both add to sound. I already had the silicone hose installed, and the euro box adds to that. Using a Mahle OEM filter.

Quote:

Originally Posted by Suhb

I had read somewhere that the silicone intake hose is good for around 9hp. It definitely adds a lot more volume to the induction noise. I still have the stock air box, but with the silicone intake hose, the induction noise is amazing, especially when all the windows are rolled up.

Idk what it adds, but with the stock box that little hose made a difference. I really need to get the car dyno'd again to see what my intake and exhaust do

spidertri · 10-17-2019, 12:48 PM

Just found a euro box on ebay.co.uk, couldn't pass it up. I already have the silicone intake tube so it'll be cool to hear what the difference is from just the air box swap.

asbrr · 10-17-2019, 02:27 PM

Quote:

Originally Posted by spidertri

Just found a euro box on ebay.co.uk, couldn't pass it up. I already have the silicone intake tube so it'll be cool to hear what the difference is from just the air box swap.

Definitely curious to see what your feedback is on the sound and power/response front!

WDE82 · 10-30-2019, 02:03 PM

I have this and it sounds great, but I got it used for like half price. I don't know if I could pay $400 for it. I like the dry filter and it seems to have held up well.

Magnum FORCE Stage-2 Si Cold Air Intake System - Black Trim w/Pro DRY S Filter Media

spidertri · 11-22-2019, 09:24 AM

Quote:

Originally Posted by asbrr

Definitely curious to see what your feedback is on the sound and power/response front!

I have to say, I didn't really notice a difference in power or sound from the euro box down low but it does seem to open up a bit more in the upper RPM.

That being said, it was completely worth doing just to have easier access to clean or change the air filter.

I definitely recommend keeping an eye on the european Ebay sites, I got mine for $60 shipped from a seller in Lithuania. Bit of a gamble I suppose but it showed up and bolted right in with no issues.

ggtitan · 12-17-2025, 07:04 PM

[QUOTE=Suprgnat;25245809]

Quote:

Originally Posted by Jessers05

Yes, the aFe Magnum on an(y) N51 powered BMW is NOT approved by the CARB.

Here's a link to the CARB OE: https://ww3.arb.ca.gov/msprog/afterm...o/d-550-38.pdf

That said, it can be swapped out in about 2 minutes.

How is swapping out a full aFe intake a 2 minute job? maybe 15 minutes+ or I am missing something, i guess its just some bolts and clamps.

mkeiser · 12-18-2025, 07:44 AM

Quote:

Originally Posted by ggtitan

How is swapping out a full aFe intake a 2 minute job? maybe 15 minutes+ or I am missing something, i guess its just some bolts and clamps.

was it really worth bumping a 6 year old thread to split hairs over a 2 minute vs 15 minute job?

ggtitan · 12-18-2025, 03:55 PM

Quote:

Originally Posted by mkeiser

was it really worth bumping a 6 year old thread to split hairs over a 2 minute vs 15 minute job?

well when i'm doing research on carb certified intakes, this thread seemed relevant. but as confused how swapping out a full intake would take less times than pumping gas, unless literally I am confused about long a job like that would actually take.

Suprgnat · 12-19-2025, 09:00 PM

[QUOTE=ggtitan;32518020]

Quote:

Originally Posted by Suprgnat

How is swapping out a full aFe intake a 2 minute job? maybe 15 minutes+ or I am missing something, i guess its just some bolts and clamps.

Sorry for the confusion. I agree. Fitting the aFe will take longer. With the stock or Performance intakes I'll stick with 2 minutes to remove and replace one with the other.

chilledn52 · 01-04-2026, 04:58 PM

Using the stock US airbox plus the D-Style (dinan) attachment

bunnyplanet · 01-31-2026, 03:35 PM

I put a Turner intake in my 130i and it sounds great. Compared to the euro box the car came with, the Turner is considerably louder and in my opinion makes the N52 sound even more interesting both inside the cabin and outside of the car.

Mind you the 130i came with the 3-stage intake manifold and a "sound generator" so both of these things are likely to be adding to the overall experience. On the sound generator - I decided not to go with Turner's intake boot so I could keep it.

While my understanding is that the Turner box seals itself against the hood, I also went and put heat reflective tape against its outer walls. Not sure what I can confidently note on specifics for performance gains, but the car is probably a little quicker and the N52 seems to like this intake.

Also would note that the install was very quick.

10-17-2019, 12:48 PM	#24
spidertri Lieutenant 686 Rep 569 Posts Drives: 11 128i \| 21 X5 40i Join Date: Sep 2010 Location: Rock Hill, SC iTrader: (1) Garage List 2011 BMW 128i [0.00]	Just found a euro box on ebay.co.uk, couldn't pass it up. I already have the silicone intake tube so it'll be cool to hear what the difference is from just the air box swap. __________________ 11 128i slicktop 19 Alltrack S 21 X5 40iX Msport
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10-30-2019, 02:03 PM	#26
WDE82 Major 886 Rep 1,273 Posts Drives: 2018 440iGC F36 Join Date: Aug 2015 Location: Torrance, CA iTrader: (0)	I have this and it sounds great, but I got it used for like half price. I don't know if I could pay $400 for it. I like the dry filter and it seems to have held up well. Magnum FORCE Stage-2 Si Cold Air Intake System - Black Trim w/Pro DRY S Filter Media __________________
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01-04-2026, 04:58 PM	#32
chilledn52 PrintablesAuto.ca 236 Rep 235 Posts Drives: 2007 BMW 328xi 6MT Join Date: Sep 2022 Location: Alberta iTrader: (0) Garage List 2007 BMW 328xi [10.00]	Using the stock US airbox plus the D-Style (dinan) attachment __________________ E90 328xi 6MT Velocity Stacks @ 257rwhp / Intake Scoops \| K&N + Charcoal Filter Delete \| DIY Dinan 3in \| 3.25in + 3.5in piping \| N54 Manifold \| MILVS \| Ceramic Coated Headers \| Secondary Cat Delete \| Xdelete \| 3.91 Diffs \| 22RPD Tune
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01-31-2026, 03:35 PM	#33
bunnyplanet Registered 8 Rep 4 Posts Drives: 2008 130i M-Sport Join Date: Oct 2023 Location: Winnipeg, MB iTrader: (0)	I put a Turner intake in my 130i and it sounds great. Compared to the euro box the car came with, the Turner is considerably louder and in my opinion makes the N52 sound even more interesting both inside the cabin and outside of the car. Mind you the 130i came with the 3-stage intake manifold and a "sound generator" so both of these things are likely to be adding to the overall experience. On the sound generator - I decided not to go with Turner's intake boot so I could keep it. While my understanding is that the Turner box seals itself against the hood, I also went and put heat reflective tape against its outer walls. Not sure what I can confidently note on specifics for performance gains, but the car is probably a little quicker and the N52 seems to like this intake. Also would note that the install was very quick.
	Appreciate 0 Quote