[Chako]

Do you guys think the M2 Competition will have the Air/Liquid top mount intercooler from the M3/M4, or a new Air/Air front mount intercooler?

The leaked press release states: 'Weight optimized Bi-Turbo for maximum power build up.'

Case for Air-Air FMIC:
-Lighter, so fits the 'weight optimized' part of the leaked release
-No hood bump: is the hood bump required to fit the air/liquid TMIC?

Case for Air/Liquid TMIC:
-Less design work for BMW as the TMIC has already been optimized/tuned for the S55

*****

Additionally, would you prefer the weight savings of the FMIC, or the increased cooling/potentially more aggressive tuning available with the TMIC for an M2 sized car?

[SeanWRT]

I suspect weight optimized and quicker build up mean smaller turbos, not cooling method.

Smaller turbos alone are more than enough to restrict power. For example strap a pair of N54 turbo so you have a S55 that's even a tad weaker than M2 N55.

I doubt BMW would go this far - engineer/make new intake plumbing and A2A IC core (sure it has to be bigger than M2/M235), just to hold M2 Comp back. Again not even necessary to begin with from power standpoint. Nor is the 'weight saving' from A2A IC worth the hassle.

But you never know, from the cost perspective, maybe they can recoup engineering/tooling of new cooling parts from the entire production life, because at the end of day A2A is cheaper to make.

[Chako]

I wonder if weight optimized could just be marketing language regarding the current technologies already in the S55 as it stands in the M3/M4, haha

[DanG]

I think it is just one of the many questions that won’t be answered until someone actually gets to look under the hood.

[ORIGIN M.]

I did not think it will have the same top mount as on the M3/4.

But we're going to have to wait and see.

[Tag]

Originally Posted by SeanWRT

I suspect weight optimized and quicker build up mean smaller turbos, not cooling method.

Smaller turbos alone are more than enough to restrict power. For example strap a pair of N54 turbo so you have a S55 that's even a tad weaker than M2 N55.

I doubt BMW would go this far - engineer/make new intake plumbing and A2A IC core (sure it has to be bigger than M2/M235), just to hold M2 Comp back. Again not even necessary to begin with from power standpoint. Nor is the 'weight saving' from A2A IC worth the hassle.

But you never know, from the cost perspective, maybe they can recoup engineering/tooling of new cooling parts from the entire production life, because at the end of day A2A is cheaper to make.

I tend to agree with this. 'Weight optimized Bi-Turbo for maximum power build up.' sounds like smaller turbos which means lighter turbos which means faster spooling turbos. Can't say TMIC require the power dome. From pics of M4's it appears to be flat with the rest of the engine bay.

If anyone has an M3/4 and can confirm this please do!

[M3_WC]

Originally Posted by Chako

I wonder if weight optimized could just be marketing language regarding the current technologies already in the S55 as it stands in the M3/M4, haha

That’s what I think, it’s just a marketing fluff statement. I don’t even think the statement was even referring to turbos specifically, but rather the “Bi-turbo” S55 as a whole. Meaning the the Bi-turbo engine is weight optimized and we already know it is.

[hellrotm]

Originally Posted by Tag

From pics of M4's it appears to be flat with the rest of the engine bay.

If anyone has an M3/4 and can confirm this please do!

Power dome is cosmetic.

For comparison the top mount intercooler on the S55 doesn't sit any higher than the B58 engine cover. The intercooler is not even the high point, the reservoir filler cap is the highest point. Which is an easy item to relocate, which I don't even think would be needed.

The M2 hood looks to have plenty of room to accommodate the top mount intercooler.

[chmura]

I agree the powerdome in the M4 looks cosmetic to me from the pics posted.

[hellrotm]

There is also space constraint, I don't think there is room for a front mount using the S55. They already had to lay down the oil cooler, which led to some failures when cars ran over large debris on road.

Personally I think it is more likely they retain the top mount.

S55 cooling setup

[Edtex]

Originally Posted by Tag

I tend to agree with this. 'Weight optimized Bi-Turbo for maximum power build up.' sounds like smaller turbos which means lighter turbos which means faster spooling turbos. Can't say TMIC require the power dome. From pics of M4's it appears to be flat with the rest of the engine bay.

If anyone has an M3/4 and can confirm this please do!

I have an M4 and yes the TMIC is flush with the top of the engine. It does not protrude above. And I for one believe the TMIC will be on top of the engine, the same as the M3/M4. In fact, when I observe the leaked photo's I can see a bulge on the hood both on the left and right sides, and also a slight bulge on the top of the hood albeit not as extreme as the M4 hood. I believe that the "de-tuned" S55 engine in the M2 Copmpetition will simply be accomplished by software only. I don't believe the M4 hood actually requires such a raised area and believe it is strictly for cosmetic reasons. Again, just my .02

[Edtex]

Originally Posted by BlackJetE90

There is also space constraint, I don't think there is room for a front mount using the S55. They already had to lay down the oil cooler, which led to some failures when cars ran over large debris on road.

Personally I think it is more likely they retain the top mount.

S55 cooling setup

Yes, I am a prime example of damaged oil cooler. I ran over a large rock which damaged my oil cooler. I replaced it.

[Tag]

Originally Posted by Edtex

Yes, I am a prime example of damaged oil cooler. I ran over a large rock which damaged my oil cooler. I replaced it.

Lucky the oil didn't completely drain out!

[Edtex]

Originally Posted by Tag

Lucky the oil didn't completely drain out!

Yep I was very lucky the oil leak was very small and I noticed otherwise I would have been looking at engine damage and thousands of dollars

[SW19]

Originally Posted by BlackJetE90

Power dome is cosmetic.

For comparison the top mount intercooler on the S55 doesn't sit any higher than the B58 engine cover. The intercooler is not even the high point, the reservoir filler cap is the highest point. Which is an easy item to relocate, which I don't even think would be needed.

The M2 hood looks to have plenty of room to accommodate the top mount intercooler.

Thanks for that great detailed info.IMO the only awesome looking M power dome was on the E46 M3.It was absolute perfection in complimenting the design of the car.The other ones all look like they are just an add on because people expect it to be part of the design.

[chris719]

95% chance it is exactly the same as in M3/M4. It is too much work to modify and re-validate the setup for a short lifecycle product like the M2 Comp. It defeats the purpose of reusing the hardware as it is.

[reppucci]

Originally Posted by M3_WC

That’s what I think, it’s just a marketing fluff statement. I don’t even think the statement was even referring to turbos specifically, but rather the “Bi-turbo” S55 as a whole. Meaning the the Bi-turbo engine is weight optimized and we already know it is.

Who knows what the marketing guys refer too! Do they even know what they are talking about? to wit.... the early "reinforced block" marketing hype of the N55 M2 motor..which turned out to be quite the hype (i.e. lie)

[Mavus]

Originally Posted by M3_WC

That’s what I think, it’s just a marketing fluff statement. I don’t even think the statement was even referring to turbos specifically, but rather the “Bi-turbo” S55 as a whole. Meaning the the Bi-turbo engine is weight optimized and we already know it is.

+1

Also the tq output appears to be the same - thx BMW! This tells us most likely the turbos are the same.

I doubt BMW would spend additional funds on R&D to redesign parts of S55. It takes a long time to perform environmental, stress and reliability testing. However, they need to decrease hp output slightly to keep marketing dept happy. Also, new M3 w/S58 is around the corner so M2 positioning with "old" S55 will work fine for marketing next gen M3/4.

[PackPride85]

Originally Posted by Smooth 330i

+1

Also the tq output appears to be the same - thx BMW! This tells us most likely the turbos are the same.

I doubt BMW would spend additional funds on R&D to redesign parts of S55. It takes a long time to perform environmental, stress and reliability testing. However, they need to decrease hp output slightly to keep marketing dept happy. Also, new M3 w/S58 is around the corner so M2 positioning with "old" S55 will work fine for marketing next gen M3/4.

Nobody thought they would spend the money to frankenstein the N55 in the M2 either....

[JTO24]

S55s have already been fit into tuner M2s without new hoods. I believe the M2c will get the same set-up as the M3/4

[M3 Adjuster]

@homerdog posted that the weight is up 55Kg. ( 110lbs) for the M2 Competition due to extra cooling capacity.

Seems like the top cooling set up would be part of this.

[Edtex]

The primary reason I got excited about the M2 Comp, and am #5 on my dealers waiting list, is the S55 engine. The detuning which reduces the hp in the M2 Comp below the M3/M4 S55 hp is very slight and done for the purposes of marketing sales for both the M2 Comp and M3/M4. It would be poor marketing for the M2 Comp to have greater hp than the pricier M3/M4. The de-tuning is accomplished by software tuning and not hardware changes therefore the M2 Comp will easily be re-tuned to increase hp and torque. And of course this is something that I intend to do with my new car.