[///M Houbi]

Swiss/EU spec car here incl. „1DE Abgasnorm RDE"

[Alec02]

Originally Posted by ///M Houbi

Swiss/EU spec car here incl. „1DE Abgasnorm RDE"

Have to confirm this, checked with my dealership service guy and all EU will have OPF. Even Mperformance exhaust not on the list still...

I will probably go for Remus one, they will calibrate M2C end of September or they will have to wait for my car to mid October, this information goes directly from Remus Austria.

[Robin_NL]

Originally Posted by Alec02

Have to confirm this, checked with my dealership service guy and all EU will have OPF. Even Mperformance exhaust not on the list still...

I will probably go for Remus one, they will calibrate M2C end of September or they will have to wait for my car to mid October, this information goes directly from Remus Austria.

Aftermarket exhaust here I come...

Greenpeace/EU/ other annoying entities : thank you for letting us consider buying aftermarket exhaust systems to begin with...
So you achieved your goals lol

Cheers
Robin

[Alec02]

Originally Posted by Robin_NL

Aftermarket exhaust here I come...

Greenpeace/EU/ other annoying entities : thank you for letting us consider buying aftermarket exhaust systems to begin with...
So you achieved your goals lol

Cheers
Robin

[Davil]

Originally Posted by bwhouse

So it has been bugging me that I couldn't work out if my car (Australian delivery) that was technically a EURO build was going to come with the dreaded OPF filter.

I think I have managed to work it out. Based on WebETK, it looks like the EURO builds 2U71 and 2U72 have an option S1DEA which specifies what exhaust they get, it changes the part numbers for both the downpipes and the center muffler.

So I double checked my VIN and sure enough no S1DEA option on the build list. The only Euro VIN could find was one of the early test cars vb08368 and sure enough, it has the S1DEA option.

So if I am right Australian delivered cars have no OPF and once you have your VIN you can check if you are getting OPF or not. Would be great if someone who has a VIN for e Euro car could check their build and see if it includes "S1DEA Exhaust Emission Standards EU6 RDE".

This is some great work bw. Thanks to the folks that checked their VINs too. Fantastic news. I plan to keep this car for a while so a thing that fails if it is not regularly set on fire was of some concern.

[bwhouse]

Originally Posted by Davil

This is some great work bw. Thanks to the folks that checked their VINs too. Fantastic news. I plan to keep this car for a while so a thing that fails if it is not regularly set on fire was of some concern.

Yup I was in the same boat, really wasn't looking forward to having the OPF. I will probably tune my car after 12 months or so anyway. But the OPF would have most likely resulted in me tuning it immediately to get a better exhaust.

In saying that, I think I must be one of the only people on this forum that actually likes the sound of the S55 with a decent exhaust

[Robin_NL]

Originally Posted by bwhouse

Yup I was in the same boat, really wasn't looking forward to having the OPF. I will probably tune my car after 12 months or so anyway. But the OPF would have most likely resulted in me tuning it immediately to get a better exhaust.

In saying that, I think I must be one of the only people on this forum that actually likes the sound of the S55 with a decent exhaust

I'm with you: I definitely don't dislike the S55 sound. Out of 10 (R6) sounds the stock S55 is easily recognizable just like the S54 and S65 V8 are. So it has its own distinctive sound

It's the complete package: N55 sound is definitely more masculine/throaty/deep and easy on the ear, but S55 is so much more than that.

Getting rid of OPF is what it's all about in the first place. S55 from an engineering / motorsport perspective is a masterpiece: which turbo engine can rev that high nowadays except for McLaren and Ferrari?

N55 is like a cripple Hussain Bolt trying to run 100meters below 10seconds. That won't happen


Cheers
Robin

[dmboone25]

Originally Posted by Robin_NL

Aftermarket exhaust here I come...

Greenpeace/EU/ other annoying entities : thank you for letting us consider buying aftermarket exhaust systems to begin with...
So you achieved your goals lol

Cheers
Robin

Can’t wait to hear which one you choose.

The Greenpeace organizations of the world are dumb - there won’t be serious attempts to identify or choose alternative energy options until those other options are readily available AND show a huge distinction in lower pollution levels, as compared to fossil fuels.

I’m all for a hydrogen filling station and water coming out of my tailpipe...as long as I can get it as many places (like petrol) and it’s not a limp wristed experience (cough, Prius, cough).

Just sayin....

[mhanism]

Reviving this thread. But anyone know or have evidence on if and when the US might require these dreadful OPFs?

Thanks!

Originally Posted by dmboone25

Can’t wait to hear which one you choose.

The Greenpeace organizations of the world are dumb - there won’t be serious attempts to identify or choose alternative energy options until those other options are readily available AND show a huge distinction in lower pollution levels, as compared to fossil fuels.

I’m all for a hydrogen filling station and water coming out of my tailpipe...as long as I can get it as many places (like petrol) and it’s not a limp wristed experience (cough, Prius, cough).

Just sayin....

[M3lwin777]

Hello guys newbie on the forum.
My question is proTUNING Freaks bypass or delete OPF sensors in the tune on EU S55 MY18-19 cars , i see the M2 competition with the ST2 93OCT but no informations on the OPF still on the modded car ?

[cookiesowns]

Originally Posted by M3lwin777

Hello guys newbie on the forum.
My question is proTUNING Freaks bypass or delete OPF sensors in the tune on EU S55 MY18-19 cars , i see the M2 competition with the ST2 93OCT but no informations on the OPF still on the modded car ?

should be trivial to remove.

[Robin_NL]

Originally Posted by mhanism

Reviving this thread. But anyone know or have evidence on if and when the US might require these dreadful OPFs?

Thanks!

Just vote for Trump again and it won't happen.

Cheers
Robin

[mhanism]

Originally Posted by Robin_NL

Just vote for Trump again and it won't happen.

Cheers
Robin

Lol - oh god no...

[M2C_PLUS]

Originally Posted by Robin_NL

Just vote for Trump again and it won't happen.

Cheers
Robin

Did someone say Trump? They do great coffee in the building.

[M2C_PLUS]

Originally Posted by cookiesowns

should be trivial to remove.

Yep, each primary cat has a pipe coming off it to a separate sensor that monitors if the back pressure gets too high in the cats/OPF's get blocked. Removing the OPF's "should" be fine as the sensors will never get a blocked signal from the primary cats as they are not there to get blocked by the OPF's

The pipes are very similar to those on OPF equipped M140i primary cat..

[MR.]

Guys, over the past few days I had many people asking me questions about the exhaust set up for the new M2C. I felt that it was time to shed some more lights on the things. For the sake of making it easy I will go from the back to the front:

Slip-On: This is the easiest upgrade for everyone with a EU-spec M2C. Replace the thick neck muffler and fit a decent one. Hardly any power increase, much better looks and a louder exhaust across the rev range even if you opt for a homologated system. Options enough in the market to consider! Valve control is not legal, but you can add it if you prefer. The slip-on is the ONLY option if you DON'T want a ECU tune on your car. Of course, you can also do a backbox delete.

Linkpipe: Not legal and only for track use, but an option if you feel like going illegal and don't have problems tuning your car. The sound volume goes up considerably when the OPFs are removed. The tune is required to disable the sensors which are fitted at the end of the downpipes. If you don't do this, then your car goes into limp mode.

Sport downpipes: A possible option if your tune requires it, not an option when you leave the OPFs installed on the car. It is a waste to install an improved set of downpipes when the OPFs are still there, because the OPFs are the biggest obstruction in the flow. I have to agree that I also heard that HJS is working on new sport downpipes that don't require OPFs, but with the current software / ECU tune requirement I don't see why you would need them. Anyone would go catless if they really wanted to improve the flow.

Catless downpipes: Totally illegal, and only smart when you have a full cat-back system that replaces both the stock slip-on and the center linkpipe with the OPFs. Installing a catless downpipe without removing the OPFs is not possible! Reason why... Your flow will change triggering the sensors and you will simply burn through the OPFs. Also a catless downpipe means Delete-R and you need to disable the OPF pressure sensors on the downpipes. This means ECU tune! Also I believe the soundtrack will be so freaking loud, you will be pulled off the road every other day by the police for driving a car which is simply waaaaay too loud.

This is the current position when it comes to options, I think. Of course, there are many developments on going. For instance, I have seen displays that go into your dashboard air vent that offer delete-r for your catless downpipes. I have discussed with those companies to develop a delete-OPF option in their displays that allows you to remove OPFs without a ECU tune. Similarly to how these displays have delete-r installed in their software.

There might be more solutions in the future, but for now don't think of installing catless downpipes on cars that have the OPFs and stock slip-on. That is not solving the issue, it will only bring you more issues. If you opt for a better exhaust note, work from the back to the front. Slip-on is the sweet spot for us guys in the EU! Only go further if you are ready to opt for a ECU tune. The rest of the world has way more room to play and can do whatever they want.

If you have thoughts or other options, than please feel free to add them here. I would love to learn more and see what other options there are coming, but for now this is it I think.

[MR.]

I felt like writing a story about the OPF/GPF.

https://drivetribe.com/p/the-opf-pan...T1Sz2u45iFh__A

MR

[RafaVargas]

Can someone please help me with photos of the exhaust system US version without OPF and the EU version with OPF?

[MR.]

Originally Posted by RafaVargas

Can someone please help me with photos of the exhaust system US version without OPF and the EU version with OPF?

There are photos across the forum. You are wondering what your car has?

MR

[Billy_BMW]

Marc, you had the akra linkpipe fitted in the recent akra videos: what did you do to stop the car going into limp mode? Have you still got the linkpipe fitted?

[MR.]

Originally Posted by Billy_BMW

Marc, you had the akra linkpipe fitted in the recent akra videos: what did you do to stop the car going into limp mode? Have you still got the linkpipe fitted?

I had the OPF back pressure sensors disabled using a ECU tune. I am working on other solutions, since I have had a number of people asking me for another option to disable the sensors and not having the possibility of a limp mode, since they don't want to tune their car. I have some ideas on my mind that I am working on.

I am still running the setup with the linkpipe and all is fine. I am going to run the Akrapovic down pipe as well to test the whole set up and see what kind of results we can achieve using this set up. I also want to test the sound track when the down pipe is fitted, but I don't think I will do it before February. Simply too busy right now.

MR

[Billy_BMW]

Thanks for confirming. I think a tune is the only way for now but an alternative is definitely worth investigating.

Thanks for all your help in finding solutions. There’s a lot of us wanting to get rid of these awful filters!