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M2 Technical Topics > S55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > Remus OPF back system back pressure problem? (EU version)

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      11-20-2020, 02:23 AM   #1
MVE7
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Remus OPF back system back pressure problem? (EU version)

I received my M2C this week, what a car!

Now i am looking for an opf back system. Am doubting between Remus or Milltek.

Certainly, I don't want to lose warranty, so according to dealer you can changes the exhaust, but nothing may be changed to the ECU.

Now I have read a number of times that there may be a problem with Remus opf back and that an error message should be written here? So would lose my warranty.

Everyone with Remus got this problem?

sorry if this question has already been asked. I'm new here
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      11-20-2020, 09:10 AM   #2
Juliana19
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Lots of noise about CEL relating to OPF with the Remus system. Motech deny it's a risk but I'd say there is no smoke without fire... I think most of the people with issues have had the resonator bypass so probably be fine with just the axle back race system.

However to be on the safe side (no smoke without fire with Remus IMO) I opted for the Miltek EL system, which is cheaper and sounds pretty good. I'm not blown away with the build quality of the Miltek if I'm honest but it does the job.
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      11-20-2020, 01:09 PM   #3
MVE7
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Quote:
Originally Posted by Juliana19 View Post
Lots of noise about CEL relating to OPF with the Remus system. Motech deny it's a risk but I'd say there is no smoke without fire... I think most of the people with issues have had the resonator bypass so probably be fine with just the axle back race system.

However to be on the safe side (no smoke without fire with Remus IMO) I opted for the Miltek EL system, which is cheaper and sounds pretty good. I'm not blown away with the build quality of the Miltek if I'm honest but it does the job.

El is res delete with axle back?
Got some soundclips for me?
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      11-25-2020, 03:06 AM   #4
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Quote:
Originally Posted by MVE7 View Post
El is res delete with axle back?
Got some soundclips for me?
I have the EL. No sorry, no videos but it does sound pretty good, it's noticeably louder without being obnoxious. It has no/little rasp either.

TBH the S55 isn't particular tuneful as an engine note but actually with the Miltek it's quite bearable.

Have a look on YT there are loads of clips including one from Miltek themselves
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      11-25-2020, 09:20 AM   #5
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Quote:
Originally Posted by Juliana19 View Post
I have the EL. No sorry, no videos but it does sound pretty good, it's noticeably louder without being obnoxious. It has no/little rasp either.

TBH the S55 isn't particular tuneful as an engine note but actually with the Miltek it's quite bearable.

Have a look on YT there are loads of clips including one from Miltek themselves
I've ordered mine yesterday
Need to wait 4 weeks
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      12-04-2020, 05:17 AM   #6
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I have a Remus Race for nearly 2 years now and never had any problems with CEL
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