[ZM2]

I don't think any of the aftermarket intakes for the M2 have shown any gains in power. As for IATs, most of the options are open/semi-open under hood, except for the one you posted. I remembered seeing at the time thinking it'd be good for IATs, but cringed b/c it scared me about reduced airflow to the radiator.

We're still trying to figure out how much of an issue airflow is for engine cooling vs certain hardware upgrades, but in the meantime I'm running the stock intake with the aFe inlet scoop via F87source recommendation to get a little more cooler nose air into the intake tract.

[AmuroRay]

Originally Posted by ZM2

I don't think any of the aftermarket intakes for the M2 have shown any gains in power. As for IATs, most of the options are open/semi-open under hood, except for the one you posted. I remembered seeing at the time thinking it'd be good for IATs, but cringed b/c it scared me about reduced airflow to the radiator.

We're still trying to figure out how much of an issue airflow is for engine cooling vs certain hardware upgrades, but in the meantime I'm running the stock intake with the aFe inlet scoop via F87source recommendation to get a little more cooler nose air into the intake tract.

You're going to need a inlet for there to be any meaningful gains on any intake. I didn't really upgrade my intake (I had an M2 intake with an AFE dry filter, Evolve Eventuri CF Scoop) for power as much as I did for the IAT benefit. I did gain a little torque in the process, but nothing really earth shattering. If I could do it over (and I may - I've had 5 different intake combinations) I would do the RK tunes intake, it's just expensive.

I still may sell my intake and scoop (too bad I gave away my Stock and M2 box/filter) and grab one.

I have posted in the MILVS thread, I can get IATs as low as ambient - 5F when cold, and regularly within < 15F during daily driving. Part of that is the intercooler, but I did note the IAT improvements with my previous intercooler.

I'll also note, my WGDC is lower than most other users at the same given boost level - I posted about it in M2guru thread. It's uncommon I see over 90% at any given time.

[F87source]

Originally Posted by M2guru

Do you have information about how it works in stock form on the M2? I'd be OK hooking up a switch to turn the m235i aux pump on/off if that's all it takes - I wouldn't need DME controlled. Interested!

It doesn't work on the m2, because the m2 doesn't have an aux water pump.

If you don't need it to be done controlled you can have it like ZM2 where it turns on with the ignition.

[F87source]

I'd rather do water injection at this point rather than get a larger intercooler. And if you add ice cubes to the water you will probably get below ambient iats.

[AmuroRay]

https://www.realoem.com/bmw/enUS/sho...diagId=17_0676

Delete 26

[F87source]

Originally Posted by AmuroRay

https://www.realoem.com/bmw/enUS/sho...diagId=17_0676

Delete 26

No, the m2 has a heat exchanger it's just the aux water pump aka part number 31 and all of the hoses.

[ZM2]

Originally Posted by AmuroRay

https://www.realoem.com/bmw/enUS/sho...diagId=17_0676

Delete 26

Old news man. The real question is how do you not delete it, and valve it off in the summer for a 4 seasons driven car.

F87source has put some thought into it with me, but we wanted to try most all other options first.

[F87source]

Originally Posted by ZM2

Old news man. The real question is how do you not delete it, and valve it off in the summer for a 4 seasons driven car.

F87source has put some thought into it with me, but we wanted to try most all other options first.

Ah now I understand the question, I thought he was responding to how the m2's setup looked vs. The m235i.

But yes, the question is how to retain the heat exchanger.

[AmuroRay]

Originally Posted by F87source

Ah now I understand the question, I thought he was responding to how the m2's setup looked vs. The m235i.

But yes, the question is how to retain the heat exchanger.

RealOEM and BMW say that the pump is present on the M2. Anyhow, separating the coolant and oil seems like the next and best step. No reason to have them together.

[F87source]

Originally Posted by AmuroRay

RealOEM and BMW say that the pump is present on the M2. Anyhow, separating the coolant and oil seems like the next and best step. No reason to have them together.

It isn't, this is a mistake by BMW. I've checked it myself, and took off the fender liner to look behind the heat exchanger and it isn't there. Typseed confirmed this as well when he built his m2. Furthermore the m2 DAMOS files don't have any control for the aux water pump but the m235i DAMOS does. So no, it isn't there.

If it were there, then ZM2's shop would have spotted it when they retrofitted him an e39 aux water pump.



There is a purpose of retaining the heat exchanger, in the summer it acts to help cool the oil temps when the car is stationary in traffic because there will not be flow through the oil cooler. In the winter it will help heat the oil up using coolant temp. You can notice this working because despite the oil thermostat being completely mechanical, the car can control oil temps via the coolant thermostat. For example if it is cold outside and your oil temps are 100C or more, you'd expect the oil thermostat to be open and the oil temps to drop. But no, the oil temps stay stable. I suspect because the DME is controlling coolant temps (which it does do based on ambient temp) and keeping the thermostat shut, the heat exchanger is now using that 100C coolant temp to warm the oil up.

[M2guru]

d088 oil cooler installed. Still not sure how people can replace the oil cooler without removing the headlight. Both times, I feel like I had no option. Removing the headlight may add time, but it adds ease.

Here are the differences between the d088, csf, and stock oil coolers. Also, a photo of how I modified the fender liner - it didn't make sense to add a big cooler to only have the larger size blocked on the back side by the liner.

[AmuroRay]

Originally Posted by M2guru

d088 oil cooler installed. Still not sure how people can replace the oil cooler without removing the headlight. Both times, I feel like I had no option. Removing the headlight may add time, but it adds ease.

Here are the differences between the d088, csf, and stock oil coolers. Also, a photo of how I modified the fender liner - it didn't make sense to add a big cooler to only have the larger size blocked on the back side by the liner.

Attachment 3256510
Attachment 3256509
Attachment 3256508

That thing looks beastly - I’m cautiously optimistic on your results. Anything you noticed from street driving?

[F87source]

Originally Posted by AmuroRay

That thing looks beastly - I’m cautiously optimistic on your results. Anything you noticed from street driving?

I wouldn't suspect there to be any change from street use because the oil thermostat needs to be keeping oil temps in check.

[AmuroRay]

Originally Posted by F87source

I wouldn't suspect there to be any change from street use because the oil thermostat needs to be keeping oil temps in check.

Mine opens in street driving - but it’s also record heat here recently.

[F87source]

Originally Posted by AmuroRay

Mine opens in street driving - but it’s also record heat here recently.

It would be open, but as soon as the oil temp drops below the threshhold it will close.

So I'm not sure you would see too much of a decrease in absolute temps. Plus the heat exchanger does a good job keeping temps consistent by helping cool the oil when the oil temps exceed coolant temps.

[AmuroRay]

Originally Posted by F87source

It would be open, but as soon as the oil temp drops below the threshhold it will close.

So I'm not sure you would see too much of a decrease in absolute temps. Plus the heat exchanger does a good job keeping temps consistent by helping cool the oil when the oil temps exceed coolant temps.

I understand!- but two things: he has a lower oil temp thermostat, which means the oil flows through the cooler sooner - so as you correctly pointed out as soon as it cooler down, it would close the thermostat.

But to the second point, another user recorded lower temps (stock thermostat) with the oil cooler on normal driving. I was curious if it was that efficient.

But the issue everyone has been running into is using that coolant to cool the oil and not having an efficient enough cooler that can do the work on its own.

[F87source]

Originally Posted by AmuroRay

I understand!- but two things: he has a lower oil temp thermostat, which means the oil flows through the cooler sooner - so as you correctly pointed out as soon as it cooler down, it would close the thermostat.

But to the second point, another user recorded lower temps (stock thermostat) with the oil cooler on normal driving. I was curious if it was that efficient.

But the issue everyone has been running into is using that coolant to cool the oil and not having an efficient enough cooler that can do the work on its own.

Yeah it would be nice to see some logs.

What car was the one you said saw drops in oil temps with an upgraded cooler? It could absolutely happen if the oil temps were way above the cars ability to control oil temps with the heat exchanger + stock oil cooler (if they even had one, so this is more likely observed in cars without the oil cooler).

[AmuroRay]

Originally Posted by F87source

Yeah it would be nice to see some logs.

What car was the one you said saw drops in oil temps with an upgraded cooler? It could absolutely happen if the oil temps were way above the cars ability to control oil temps with the heat exchanger + stock oil cooler (if they even had one, so this is more likely observed in cars without the oil cooler).

HunterHofman has a YouTube video of installing the DO88 cooler. In his comments, he said he saw a 10F reduction in just daily driving.

[F87source]

Originally Posted by AmuroRay

HunterHofman has a YouTube video of installing the DO88 cooler. In his comments, he said he saw a 10F reduction in just daily driving.

That's interesting, very interesting.

[Sultan hamdi]

Hi guys, is there any radiator that is an upgrade for the F 87 n55 motor cars that can be installed and yet retain the AC system

[M2guru]

Originally Posted by F87source

Yeah it would be nice to see some logs.

What car was the one you said saw drops in oil temps with an upgraded cooler? It could absolutely happen if the oil temps were way above the cars ability to control oil temps with the heat exchanger + stock oil cooler (if they even had one, so this is more likely observed in cars without the oil cooler).

What do you want to see logs of? Street driving with the upgraded oil cooler (do88)?

[F87source]

Originally Posted by M2guru

What do you want to see logs of? Street driving with the upgraded oil cooler (do88)?

Yup!

Do you have any before logs? Because it might not be too helpful without those.