[Poochie]

Any knows if this a solution?


Eventuri V2 Sealed Duct Upgrade kit arrived! https://f80.bimmerpost.com/forums/sh....php?t=1718842

[Malakas]

Originally Posted by SEAT TIME RULES

I was the OP for this thread and its great to see Malakas producing these parts.

As I mentioned in my first post intake temps are only 10-15 degrees warmer than actual outside temps.

They are higher when the car is moving slow, or idling of course. The 10-15 degree difference is after a few minutes of decent speed driving, I doubt the OEM setup will record such a low difference.

I made some bends from used plastic containers and sealed them. Turbo cars love cold air in their intakes :-)

Awesome stuff and inspiration behind the whole endeavor. I think more air HAS to be better at speed

[speedsnice]

Originally Posted by msdss

So you were able to fit the OEM M4 parts w/o any issues or modifications?

I just had to make an opening for the elbows by cutting the plastic surround.

[SEAT TIME RULES]

Originally Posted by Malakas

Awesome stuff and inspiration behind the whole endeavor. I think more air HAS to be better at speed

The air temp difference was higher before I added the Ram scoops and added the elbows. It does work, just don't know how much of a difference it actually makes at speed

[armiii]

Could bmw have closed this on purpose?

[Megator]

Originally Posted by Megator

BMW likely did this in order to increase the pressure of the air going through the rads in order to improve cooling efficiency. This is why most modern cars have ducted inlets to the rads.

Originally Posted by armiii

Could bmw have closed this on purpose?

Gotta read the whole thread man! Its on the 1st page lol-

[flybigjet]

Ok guys-- riddle me this.

The car is going into Carbahn on Thursday and since they're replacing the heat exchanger, I thought I'd have them snap in the M3/M4 intake pieces.

I just checked, and the part numbers for the long tube that comes off the intake are different. WTF? Am I screwed?

The first two attachments are pictures and parts from the M2C:

And the second two picture and parts are from the F82 M4:

They sure LOOK identical in the pictures (but that may just be BMW being lazy).

Am I screwed? or are they maybe different lengths?

To my understanding, the parts Intake duct, left (13717613157), Intake duct, right (13717613156) and Intake grills (13718507321 x2) should just snap in.

Right? RIGHT?

Since the bumper's going to off anyway for the intercooler and CBC, I want to get this done-- but now I'm second guessing myself thinking I need to get the M4 part #'s 13 and 14.

A little help? I can't figure out why BMW would have different part numbers.

TIA--

[Malakas]

My guess is that they are the exact same length... so don't worry... i say this because people who have used the elbow have not had any placement issues

[prompt]

Originally Posted by Alfy

I guess now we know why the M2CS race car has openings under the headlights...

I'm 100% sure they are channeling fresh air to the intakes!!!

I think those are brake cooling ducts

[neil_79]

Just reviving this thread, is anyone able to confirm what solution BMW used with the CS?

[Wah]

Originally Posted by neil_79

Just reviving this thread, is anyone able to confirm what solution BMW used with the CS?

CS looks to be the same.

[stefan]

This is the strangest thing I have ever seen. There appears to be zero advantage to sealing that duct off. It would have cost BMW even LESS to reuse S55 parts from the M3.

Questions
- why.. what could be the reason for this, I'm at a loss
- does this fundamentally increase heat soak and is this why the M2S has no sound deadening in the door jam?
- is THIS how they "detune" the s55 to begin with?

[NISFAN]

Originally Posted by stefan

This is the strangest thing I have ever seen. There appears to be zero advantage to sealing that duct off. It would have cost BMW even LESS to reuse S55 parts from the M3.

Questions
- why.. what could be the reason for this, I'm at a loss
- does this fundamentally increase heat soak and is this why the M2S has no sound deadening in the door jam?
- is THIS how they "detune" the s55 to begin with?

BMW do this on many car models depending on climate, not just M2C. So there does seem to be rules that govern which cars/regions get the open vented vs closed systems, although as always there are contradictory examples throughout the line up.

I suspect that generally speaking, colder wet climates get closed intakes, because get enough water into those intakes and you have a rod through your block faster than you can say "wow, that is some heavy rain". That danger is very real, and expensive.

On some cars the open grille option is called "hot climate version". Which seems to indicate it is at least partly a regional / climate thing. It seems clear BMW's default is to not have them, unless needed.

Why M2C never got the open vents in any market, we don't know. Could it be that it was a run out model, not worth the extra expense to have two systems? Could it be that the M2C has two air-boxes, so exactly double the intake capacity of the N55 version, making available airflow from behind the bumper a non issue? We can only guess. M3/M4 have them, but as i said earlier, in automotive world there are some strange outcomes. That's a committee driven process for you.

I fitted the 'hot climate' opening to my F22 M240i (Stage 2 450hp), cant say i noticed a single degree cooler IAT under the same conditions (logged via AIM digital dash system via direct CAN link), but to my inner engineering geek, an open system seems the better option, so will probably get round to fitting these to my M2C at some point.

[stefan]

Originally Posted by NISFAN

On some cars the open grille option is called "hot climate version". Which seems to indicate it is at least partly a regional / climate thing. It seems clear BMW's default is to not have them, unless needed.

Why M2C never got the open vents in any market, we don't know. Could it be that it was a run out model, not worth the extra expense to have two systems? Could it be that the M2C has two air-boxes, so exactly double the intake capacity of the N55 version, making available airflow from behind the bumper a non issue? We can only guess. M3/M4 have them, but as i said earlier, in automotive world there are some strange outcomes. That's a committee driven process for you.

Interesting. I am in a cold and brutal climate. FWIW, my M cars from the factory have been a mixed bag of versions. This M2C is has S823 Hot-Climate Version. Not only is this the "wrong" climate, but the vents are blocked. Really bizarre stuff. I have a heated steering wheel as well. Crazy.

[quenotte]

Originally Posted by NISFAN

BMW do this on many car models depending on climate, not just M2C. So there does seem to be rules that govern which cars/regions get the open vented vs closed systems, although as always there are contradictory examples throughout the line up.

I suspect that generally speaking, colder wet climates get closed intakes, because get enough water into those intakes and you have a rod through your block faster than you can say "wow, that is some heavy rain". That danger is very real, and expensive.

On some cars the open grille option is called "hot climate version". Which seems to indicate it is at least partly a regional / climate thing. It seems clear BMW's default is to not have them, unless needed.

Why M2C never got the open vents in any market, we don't know. Could it be that it was a run out model, not worth the extra expense to have two systems? Could it be that the M2C has two air-boxes, so exactly double the intake capacity of the N55 version, making available airflow from behind the bumper a non issue? We can only guess. M3/M4 have them, but as i said earlier, in automotive world there are some strange outcomes. That's a committee driven process for you.

I fitted the 'hot climate' opening to my F22 M240i (Stage 2 450hp), cant say i noticed a single degree cooler IAT under the same conditions (logged via AIM digital dash system via direct CAN link), but to my inner engineering geek, an open system seems the better option, so will probably get round to fitting these to my M2C at some point.

The reason for M2C may just be to have more cabin induction noise...

[S2000_Europe]

Originally Posted by quenotte

The reason for M2C may just be to have more cabin induction noise...

If that were true, as the Subaru Sti, the design should have a to hose to the firewall so you can hear air flow.

[quenotte]

Originally Posted by S2000_Europe

If that were true, as the Subaru Sti, the design should have a to hose to the firewall so you can hear air flow.

BMW also had that kind of "hose to firewall" on previous models like Z4 3.0si.

A closer example: M235i vs M2 OG airbox!

M235i and M2 OG share nearly the same engine (only different spark plugs, pistons, oil pump, diverter valve).

M2 OG has, on top of regular full pipe from behind kidney grilles, an additional red opening in engine bay:



This additional opening adds some engine induction noise and you will clearly hear more turbo noise.

I test this 335i MPPK/M2 OG airbox when I had my M235i.

So, yes, not having full ducted pipe may be to provide more engine induction noise

[S2000_Europe]

Originally Posted by quenotte

BMW also had that kind of "hose to firewall" on previous models like Z4 3.0si.

A closer example: M235i vs M2 OG airbox!

M235i and M2 OG share nearly the same engine (only different spark plugs, pistons, oil pump, diverter valve).

M2 OG has, on top of regular full pipe from behind kidney grilles, an additional red opening in engine bay:



This additional opening adds some engine induction noise and you will clearly hear more turbo noise.

I test this 335i MPPK/M2 OG airbox when I had my M235i.

So, yes, not having full ducted pipe may be to provide more engine induction noise

Does that opening make a such a difference? I think the ASM or Exhaust noise will overlap the duct noise.

Hose to the firewall is this one, you can really hear the engine breath, one yo change to an aftermarket exhaust, is inaudible

[S2000_Europe]

I read somewhere that BMW said that the S55 in the M2 has less power than m3/m4 because runs a hotter.

I do not know if this is true or it is marketing excuse for the power difference. If the former is true. Will adding the extensions to the intakes reduce the air flow to the radiator in a amount that neutralize the benefits of lower intake temps?

[MrOhnoez]

Originally Posted by S2000_Europe

I read somewhere that BMW said that the S55 in the M2 has less power than m3/m4 because runs a hotter.

I do not know if this is true or it is marketing excuse for the power difference. If the former is true. Will adding the extensions to the intakes reduce the air flow to the radiator in a amount that neutralize the benefits of lower intake temps?

Then the CS has some explainin to do.

[Enabled]

I'm just curious if anyone logged temps many times to see if there was a true difference. There may be.

And I just purchased the M3/M4 hardware.. too bad I didn't know of this when I had my bumper off last month. I spent a lot of time aligning it perfectly after removal that I don't know if I want to do that again.

[SEAT TIME RULES]

Originally Posted by stefan

This is the strangest thing I have ever seen. There appears to be zero advantage to sealing that duct off. It would have cost BMW even LESS to reuse S55 parts from the M3.

Questions
- why.. what could be the reason for this, I'm at a loss

IMHO BMW did this because they were using existing inventory of parts and the elbows and duct opening pieces were through their production runs, and/or the elbows are slightly different measurements between the F80/F82 and the M2 platform due to front grill and headlamp specs

- does this fundamentally increase heat soak and is this why the M2S has no sound deadening in the door jam?

I doubt heat soak would ever be an issue with the A/W intercooler. Other than IAT's being a little more consistent- (delta between outside Air temp & IAT readings) I see a 15-25 degree difference at lower speeds and only 10-15 at higher speeds. My 2020 has no sound deadening in the doors either.

- is THIS how they "detune" the s55 to begin with?

I believe the car is detuned for marketing purposes. (Software changes in total boost and timing) God forbid the M2C costs $15K less than a F80/F82 and has the same HP/TQ #'s