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Technical Topics B58 6-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications M340i MPE (M Performance Exhaust) installed + sound clips

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      05-31-2020, 12:58 AM   #221
mhkorean
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Got my MPE installed at the dealership and WOW does it make a difference. TBF the stock M340i should've sounded like it does now with the MPE installed.
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      06-01-2020, 08:56 AM   #222
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I want this but I'm very nervous about the cold starts (don't care how loud it is any other time). I really don't want to piss off my neighbors...it's a fairly quiet street (I sometimes feel like cold starts stock are quite loud - not for me but maybe them?).
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      06-01-2020, 11:13 AM   #223
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Quote:
Originally Posted by Burrcold View Post
I want this but I'm very nervous about the cold starts (don't care how loud it is any other time). I really don't want to piss off my neighbors...it's a fairly quiet street (I sometimes feel like cold starts stock are quite loud - not for me but maybe them?).
I live in an apartment complex and park in garage under the unit. I guarantee people can hear my cold start (comfort mode) at 7:30am when I go to work. But I've come to not care.
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      06-01-2020, 11:19 AM   #224
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Quote:
Originally Posted by mhkorean View Post
I live in an apartment complex and park in garage under the unit. I guarantee people can hear my cold start (comfort mode) at 7:30am when I go to work. But I've come to not care.
LOL I wish I didn't care, but my street has a lot of nice families with young families (myself included). I've had loud(ish) exhausts on previous vehicles but if this is VERY loud on cold starts, I may have to pass
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      06-03-2020, 08:36 PM   #225
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Quote:
Originally Posted by vicfalc09 View Post
BMW M PERFORMANCE MUFFLER SYSTEM - M340i - BMW (18-30-2-464-492)

https://www.bmwpartspros.com/oem-par...b3J5IFBhZ2U%3D
is this website directly affiliated with bmw because i’m on the verge of impulsively buying the m performance exhaust but i don’t want to void warranty with an off brand exhaust.
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      06-03-2020, 08:43 PM   #226
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Quote:
Originally Posted by pjpellegrino View Post
is this website directly affiliated with bmw because i’m on the verge of impulsively buying the m performance exhaust but i don’t want to void warranty with an off brand exhaust.
You will get 100% OEM from BMWPartsPros. This will not void your warranty.
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      06-03-2020, 08:50 PM   #227
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Quote:
Originally Posted by PETES_M340i View Post
You will get 100% OEM from BMWPartsPros. This will not void your warranty.
ok cool thanks. and if i buy it and just bring it to any dealer they will install? or do i have to bring it to a separate place?
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      06-04-2020, 12:22 AM   #228
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Quote:
Originally Posted by pjpellegrino View Post
ok cool thanks. and if i buy it and just bring it to any dealer they will install? or do i have to bring it to a separate place?
Dealer should be fine. You can call your local dealership and ask them to quote you a price for labor.
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      06-04-2020, 05:05 PM   #229
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Despite my neighbors probably hating me in a week or so, I bought the M Performance Exhaust! Getting it installed in about a week. Can't wait! I really hope it's not too loud or more important to me, that it doesn't drone (I watched one YouTube video where the guy says it's awesome but it does have some drone around 70mph). Has anyone else experienced drone?
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      06-04-2020, 07:31 PM   #230
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Quote:
Originally Posted by Burrcold View Post
Despite my neighbors probably hating me in a week or so, I bought the M Performance Exhaust! Getting it installed in about a week. Can't wait! I really hope it's not too loud or more important to me, that it doesn't drone (I watched one YouTube video where the guy says it's awesome but it does have some drone around 70mph). Has anyone else experienced drone?
Exhausts drone at a certain RPM, not at a speed.
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      06-04-2020, 07:38 PM   #231
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Quote:
Originally Posted by Cabby View Post
Exhausts drone at a certain RPM, not at a speed.
I know that...just saying what the dude from the video said. I'm assuming he meant cruising on the highway at 70mph (probably around 3k rpm) it drones a bit. I just wanted to see if any other owners noticed the same.

I've had exhausts that drone (Tanabe quad exhaust on my IS350 sounded great but droned pretty bad at cruising highway speed/rpm). I could deal with it but would be interested to know if an M Performance developed exhaust would have tuned that out.
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      06-04-2020, 11:02 PM   #232
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Quote:
Originally Posted by Burrcold View Post
Despite my neighbors probably hating me in a week or so, I bought the M Performance Exhaust! Getting it installed in about a week. Can't wait! I really hope it's not too loud or more important to me, that it doesn't drone (I watched one YouTube video where the guy says it's awesome but it does have some drone around 70mph). Has anyone else experienced drone?
Honestly the in-person sound is waaaay better than what you see on youtube or the forums. Let me know what you think after your first cold start
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      06-05-2020, 05:54 AM   #233
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I don't think there's any drone and I also have a catted VRSF dp and my exhaust flap unplugged. Sounds awesome. You won't regret it.
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      06-05-2020, 07:31 AM   #234
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Awesome thanks guys! So excited!
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      06-08-2020, 01:39 PM   #235
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so i just got off the phone with Rallye BMW, one of the largest bmw dealerships in America and i asked about the m performance exhaust and they told me there was no higher performing exhaust that they make/sell for the m340. the other option he gave me was to install a dinan midpipe which wouldn’t void the warranty and makes the car sound better. does anyone know why he said they don’t make a performance exhaust? and if the dinan midpipe is worth the purchase?
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      06-08-2020, 01:56 PM   #236
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Quote:
Originally Posted by pjpellegrino View Post
so i just got off the phone with Rallye BMW, one of the largest bmw dealerships in America and i asked about the m performance exhaust and they told me there was no higher performing exhaust that they make/sell for the m340. the other option he gave me was to install a dinan midpipe which wouldn’t void the warranty and makes the car sound better. does anyone know why he said they don’t make a performance exhaust? and if the dinan midpipe is worth the purchase?
They don't know what they're talking about. Tell them to go here or give them the part number...

https://www.getbmwparts.com/oem-part...b3J5IFBhZ2U%3D
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      06-11-2020, 01:56 PM   #237
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quiet MPE

Midway through my drive, my MPE had an extremely loud pop on a downshift and then after that got quiet. Almost as quiet as stock exhaust w/ sport+.

Anyone else experience this? I almost think one of the valves closed up somehow. I might get it checked out if it doesn't fix itself in the next few days.
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      06-11-2020, 04:53 PM   #238
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There's only one valve for the MPE (passenger side exhaust tip). Put it Sport+ the next time you drive home. Once parked, leave it running in sport+ and go back and look in the passenger exhaust tip (flashlight might be needed). You should see the valve right away and be able to tell if it's open or closed.
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      06-11-2020, 05:38 PM   #239
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Quote:
Originally Posted by mhkorean View Post
Midway through my drive, my MPE had an extremely loud pop on a downshift and then after that got quiet. Almost as quiet as stock exhaust w/ sport+.

Anyone else experience this? I almost think one of the valves closed up somehow. I might get it checked out if it doesn't fix itself in the next few days.
I get the random loud pop every once in a while too. Catches me off guard in a good way but I never had an issue with it getting quiet afterwards.
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      06-12-2020, 10:10 AM   #240
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I'm surprised my other video didn't get posted here, but not too long ago I made a new video on My MPE, here it is for everyone. Listen till the end, mic quality is a bit better (headphones recommend)
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      06-16-2020, 03:15 PM   #241
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Got the M Performance Exhaust installed today and wow there is no doubting that this is different from the stock M340i exhaust. Everyone says that videos don't do it justice and that's very true. Cold starts (even warm starts) are really loud! It settles down after a minute or two. Even starting in comfort is super loud...but a good loud (maybe not to my neighbors but meh). Driving in comfort you can still tell that there's something different from the stock exhaust but it's not as noticeable. Sport is much louder and definitely more pops and bangs compared to stock. At this point you absolutely know you a driving a car with an upgraded exhaust. Now put it in Sport Plus and geez! The grunts on fast up shifts, the amount of pops, bangs, and the odd really loud shotgun sounding gunshot is pretty crazy. The down shifts are filled with deep burbles and pops as well. Even as you are creeping along to a stop at a light it burbles and pops all the way until you stop regardless of how smooth and slow you pull up to a light (can be a little embarrassing if you aren't used to aftermarket exhausts).

I freaking love it! I will say however, a lot of people say this is how the M340i should have come from the factory...I gotta disagree on that. It's very aggressive and would most likely turn off half the buyers of this car (ones that aren't on here lol). But for many of enthusiasts, it's a brilliant upgrade. 10 out of 10.
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      06-16-2020, 03:33 PM   #242
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I second Burrcold's write up but haven't been able to give as good a description bc mine was port installed and never knew the difference. My pre-order test drive was too long ago to remember for a good comparo.
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