Making M Performance Exhaust Louder

BJM2018 · 11-18-2019, 10:39 PM

Mine is quieter now then when I first got on my 18 M2, thought it would be the opposite...Without a downpipe anyway to make it louder?

doughboy · 11-19-2019, 06:05 AM

M2C? S55?

Are you EU with OPF?

cb804 · 11-19-2019, 06:12 AM

Are your valves operating correctly? Maybe the valves are not opening.

omasou · 11-19-2019, 07:12 AM

To "open up" a stock exhaust it needs to heat up. This can be accomplished by 1. long drives (hours) 2. autocross 3. HPDE

BJM2018 · 11-19-2019, 10:39 AM

Quote:

Originally Posted by doughboy

M2C? S55?

Are you EU with OPF?

Its a 2018 M2 with DCT.

What does ECU with OPF mean?

BJM2018 · 11-19-2019, 10:40 AM

Quote:

Originally Posted by omasou

To "open up" a stock exhaust it needs to heat up. This can be accomplished by 1. long drives (hours) 2. autocross 3. HPDE

Its the M Performance Exhaust

BJM2018 · 11-19-2019, 10:42 AM

Quote:

Originally Posted by cb804

Are your valves operating correctly? Maybe the valves are not opening.

Yes after clicking the BT I can hear them open

pz619 · 11-19-2019, 12:23 PM

Might want to repost in the N55 section. You'll probably get some more meaningful feedback there. The M performance exhaust for the S55 doesn't have the same bluetooth controller and is controlled by the drive modes instead.

6speed_M2 · 11-19-2019, 12:59 PM

Catless DP for the win 😬

VisualEcho · 11-19-2019, 01:08 PM

If you bought an exhaust without first getting an aftermarket catted or catless down-pipe you probably wasted your money.

BJM2018 · 11-19-2019, 10:43 PM

Quote:

Originally Posted by pz619

Might want to repost in the N55 section. You'll probably get some more meaningful feedback there. The M performance exhaust for the S55 doesn't have the same bluetooth controller and is controlled by the drive modes instead.

Your thanks for the note.

doughboy · 11-20-2019, 10:30 AM

Quote:

Originally Posted by BJM2018

Its a 2018 M2 with DCT.

What does ECU with OPF mean?

No problem but this is S55 engine section.

That's why i asked, you have a N55 motor, completely different.

EU with OPF refers to EU model with petrol particulate filters, something very important for S55 owners wanting more noise, not relevant for older N55.

LuvMyE92 · 11-20-2019, 10:53 AM

I also have a 2018 M2 with MPE. I will suggest that it seems to have gotten a bit quieter with some miles on it (currently around 5000). It does seem to open up and get louder when on the track and I'm really using the throttle and running up the RPMs. Rarely do I ever use WOT on the street and even rarer do I bother going over 4K RPM. Those are the two conditions under which MPE really sings.

WOT: Wide Open Throttle.

doughboy · 11-20-2019, 03:29 PM

Quote:

Originally Posted by LuvMyE92

even rarer do I bother going over 4K RPM. Those are the two conditions under which MPE really sings.

Woh, each to their own, but the S55 doesn't really wake up till about 5krpm.

Below 4 is really just lugging around, coasting / cruising.

I also don't use WOT too often, but running up to 6-7k pretty often is a nice place to be for driver and engine.

LuvMyE92 · 11-21-2019, 06:43 AM

Quote:

Originally Posted by doughboy

Woh, each to their own, but the S55 doesn't really wake up till about 5krpm.

Yeah, I shouldn't have written "rarely do I bother" and instead should have said something like: in any gear other than 1st, going over 5K RPM is breaking the speed limit other than on the Interstate, so rarely do I get the opportunity to enjoy the melodious sounds of the MPE around town on the street.

doughboy · 11-21-2019, 07:23 AM

Haha understood!

11-18-2019, 10:39 PM	#1
BJM2018 Private 18 Rep 93 Posts Drives: 2018 M2 DCT Join Date: Jul 2018 Location: Vancouver iTrader: (0)	Making M Performance Exhaust Louder Mine is quieter now then when I first got on my 18 M2, thought it would be the opposite...Without a downpipe anyway to make it louder?
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11-19-2019, 06:05 AM	#2
doughboy Major General 1545 Rep 8,972 Posts Drives: 2018 M2 Comp 6MT Join Date: Jan 2009 Location: UK iTrader: (2)	M2C? S55? Are you EU with OPF?
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11-19-2019, 06:12 AM	#3
cb804 Captain 2350 Rep 936 Posts Drives: 340 xDrive, M2C Join Date: Jul 2014 Location: Chicago iTrader: (0)	Are your valves operating correctly? Maybe the valves are not opening.
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11-19-2019, 07:12 AM	#4
omasou Brigadier General 2086 Rep 3,003 Posts Drives: BMWs Join Date: Apr 2016 Location: US iTrader: (4) Garage List 2023 BMW S1000RR [0.50] 2022 BMW F900XR [3.00] 2022 BMW X6 40i [0.50] 2020 BMW M2C [9.50]	To "open up" a stock exhaust it needs to heat up. This can be accomplished by 1. long drives (hours) 2. autocross 3. HPDE
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11-19-2019, 12:23 PM	#8
pz619 Brigadier General 3277 Rep 3,255 Posts Drives: F87 M2C 6MT, Tesla 3 Join Date: Oct 2013 Location: San Diego iTrader: (1)	Might want to repost in the N55 section. You'll probably get some more meaningful feedback there. The M performance exhaust for the S55 doesn't have the same bluetooth controller and is controlled by the drive modes instead.
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11-19-2019, 12:59 PM	#9
6speed_M2 Captain 3633 Rep 874 Posts Drives: ///M2 Join Date: Nov 2018 Location: California iTrader: (0) Garage List ///M2 Performance ... [9.11]	Catless DP for the win 😬 __________________ N54 135i 6MT (FBO, JB4 reflash, E30) sold E90 M3 DCT (FBO, tuned) sold Current: Performance Edition M2 6MT (FBO, ethanol tuned by Bend Calibration/Ecutek)
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11-19-2019, 01:08 PM	#10
VisualEcho Banned 6629 Rep 4,145 Posts Drives: '18 M2 6MT Join Date: Sep 2019 Location: Missouri iTrader: (1) Garage List 2018 BMW M2 [10.00]	If you bought an exhaust without first getting an aftermarket catted or catless down-pipe you probably wasted your money.
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11-20-2019, 10:53 AM	#13
LuvMyE92 Occasionally frequent poster 3000 Rep 2,744 Posts Drives: CT5V-Blackwing Join Date: Jan 2008 Location: RTP NC, USA iTrader: (0)	I also have a 2018 M2 with MPE. I will suggest that it seems to have gotten a bit quieter with some miles on it (currently around 5000). It does seem to open up and get louder when on the track and I'm really using the throttle and running up the RPMs. Rarely do I ever use WOT on the street and even rarer do I bother going over 4K RPM. Those are the two conditions under which MPE really sings. WOT: Wide Open Throttle. __________________ Current inventory: F22 & G05 Cadillac CT5-V Blackwing w/3 pedals Past: E24,E28(3),E34,E36,E37,E38(2),E39(4),E46,E89,E92 (obviously),F01,F06,F10,F30,F87,G12,G30(2),G82(2)
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11-21-2019, 07:23 AM	#16
doughboy Major General 1545 Rep 8,972 Posts Drives: 2018 M2 Comp 6MT Join Date: Jan 2009 Location: UK iTrader: (2)	Haha understood!
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