What intake options do we have for Z4M?

jontZ4M · Post by **jontZ4M** » Mon Apr 10, 2023 11:32 am

Hi guys

I got my Z4M roadster 3 months ago. So far I have: done a basic underside refurb, replaced the leaking diff seal and replaced the exhaust with an aftermarket exhaust.

All well so far.

Next is the intake. Currently it is standard. I come from 1990's jap cars. For those cars it is normal to replace the OE airbox and filter with an exposed cone-type filter. It didn't really add any power, but gave a lovely deep intake sound.

I noticed on this car the air sensor is part of the OE airbox. This means that you can't just replace the airbox with a cone filter.

So what is the aftermarket intake etiquette with the Z4M? What are our options?

Ideally will be looking for something that A) does not reduce power B) adds lots of nice sound.

Thanks!

Argyll Andy · Post by **Argyll Andy** » Mon Apr 10, 2023 11:58 am

jontZ4M wrote: ↑Mon Apr 10, 2023 11:32 am Ideally will be looking for something that A) does not reduce power B) adds lots of nice sound

C) empties your wallet

There’s quite a few and I’m sure there’ll be plenty of options from those more knowledgeable

mmm-five · Post by **mmm-five** » Mon Apr 10, 2023 12:26 pm

You can just replace the airbox with a cone filter...as the air sensor is in the rubber neck after the airbox.

Other than a basic 'ram-air' or K&N cone filter, you can go for (in ascending price order) AFE intake, Simota carbon intake, Evolve/Eventuri carbon intake, Gruppe-M intake, Karbonius carbon plenum replacement, CSL-style carbon plenum & snorkel + alpha-n tune.

Alternatively, you could go for a velocity stack system...but you might need ear-plug/defenders for that

Sound clip from about 5m:00s into this video...

jontZ4M · Post by **jontZ4M** » Tue Apr 11, 2023 10:51 am

mmm-five wrote: ↑Mon Apr 10, 2023 12:26 pm You can just replace the airbox with a cone filter...as the air sensor is in the rubber neck after the airbox.

Other than a basic 'ram-air' or K&N cone filter, you can go for (in ascending price order) AFE intake, Simota carbon intake, Evolve/Eventuri carbon intake, Gruppe-M intake, Karbonius carbon plenum replacement, CSL-style carbon plenum & snorkel + alpha-n tune.

Alternatively, you could go for a velocity stack system...but you might need ear-plug/defenders for that

Brilliant feedback, thanks!

jontZ4M · Post by **jontZ4M** » Tue Apr 11, 2023 3:21 pm

Please see pic. I checked and the black plastic pipe that the air sensor is plugged into is definitely part of the air box moulding...

Snakobs · Post by **Snakobs** » Tue Apr 11, 2023 4:19 pm

mmm-five wrote: ↑Mon Apr 10, 2023 12:26 pm Simota carbon intake

Have tried searching for this but cannot find any places listing it for sale? Is it M3 specific?

the Simota website lists a cold air intake but it looks too long -any ideas?

http://www.simota.com/search_productsinfo.php?ID=865

mmm-five · Post by **mmm-five** » Tue Apr 11, 2023 8:04 pm

Snakobs wrote: ↑Tue Apr 11, 2023 4:19 pm
mmm-five wrote: ↑Mon Apr 10, 2023 12:26 pm Simota carbon intake

Have tried searching for this but cannot find any places listing it for sale? Is it M3 specific?

the Simota website lists a cold air intake but it looks too long -any ideas?

http://www.simota.com/search_productsinfo.php?ID=865

From my order email ist was model CF610-32
http://www.simota.com/productsinfo.php?ID=368

But I sent it back for a refund after a few weeks as it kept causing my car to die on full throttle applications. Was told it wouldn't need a remap originally, and then told that it 'might need a remap' after all

mmm-five · Post by **mmm-five** » Tue Apr 11, 2023 8:05 pm

jontZ4M wrote: ↑Tue Apr 11, 2023 3:21 pm Please see pic. I checked and the black plastic pipe that the air sensor is plugged into is definitely part of the air box moulding...

Yes, you are quite right. I think due to a combination of all my air-boxes having a MAF tube in the kit...and me not seeing my own car's engine bay for a few years (don't ask), I've obviously forgotten what it actually looked like

All the intake kits I've seen (not sure about the cone filter ones) do have a replacement tube/collar for the MAF sensor. You may even be able to buy the MAF tube by itself to add a correctly-sized cone filter on???

However, I'd still recommend getting something that has some sort of airbox housing.

AFE

eVenturi

Gruppe-M

jontZ4M · Post by **jontZ4M** » Wed Apr 12, 2023 10:30 am

Yup that makes a lot more sense. Thanks

jontZ4M · Post by **jontZ4M** » Sun Apr 16, 2023 10:38 am

FYI - I've decided to 3d print my own intake. Bit weird I know. Just finishing it up.

I will eventually get the Eventuri I think, but with new baby just arrived, no way I can get 800 big ones past wife at moment.

Will update with pics or vid soon.

j3nks79 · Post by **j3nks79** » Sun Apr 16, 2023 10:45 am

Standard of CSL only. The rest really don’t work well on the S54

Jon2215 · Post by **Jon2215** » Sun Apr 16, 2023 11:10 am

GSR box on mine

jontZ4M · Post by **jontZ4M** » Sun Apr 16, 2023 7:40 pm

Jon2215 wrote: ↑Sun Apr 16, 2023 11:10 am GSR box on mine

Man that looks good. What did you use to clean up the alloy to a shine like that?

Jon2215 · Post by **Jon2215** » Sun Apr 16, 2023 7:43 pm

jontZ4M wrote: ↑Sun Apr 16, 2023 7:40 pm
Jon2215 wrote: ↑Sun Apr 16, 2023 11:10 am GSR box on mine
Man that looks good. What did you use to clean up the alloy to a shine like that?

Dremel and Autosol

jontZ4M · Post by **jontZ4M** » Mon Apr 17, 2023 11:09 am

Jon2215 wrote: ↑Sun Apr 16, 2023 7:43 pm Dremel and Autosol

That's my weekend sorted then...

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