MPE Installation

AtlantisF80 · 07-18-2019, 10:48 AM

I'm new to world of exhaust and installation, etc.

I saw that someone was selling a MPE muffler only with a crack in it. If you were to install a MPE muffler only would you still get all the claimed weights benefits? Would the sound be that much different? Power difference with only the muffler?

Or would I need to also install the new piping (downpipe? midpipe? I don't know what the difference is between those two pipes.) that comes with the complete MPE kit to get the horsepower and weight benefits?

Maitre_Absolut · 07-18-2019, 12:09 PM

I'm pretty sure you can't install the "muffler only" without custom piping. It will not bolt to stock mid pipe no matter where you cut it.

You need at least part of the rear MPE mid pipe to connect to the muffler.

Someone tried with muffler only and posted pics.

Nitrile · 07-20-2019, 11:17 AM

Welding Titanium to SS is also another complication that most places will not do because of the complexity of it.

Easier way is to clamp

aBMWfan · 07-20-2019, 01:38 PM

Quote:

Originally Posted by Nitrile

Welding Titanium to SS is also another complication that most places will not do because of the complexity of it.

Easier way is to clamp

And clamping it will be very difficult because of the fittings that are needed, especially on the outer pipes

BzsBimmer · 07-20-2019, 04:17 PM

Correct. Only way would be to cut the flared flanges on the muffler end and then connect to a custom pipe with clamps. Not easy but doable.

You can probably forget about resale at that point unless you sell as a kit.

I went to three muffler shops before I just bit the bullet and got the connecting pipes and hardware. YMMV

07-18-2019, 10:48 AM	#1
AtlantisF80 First Lieutenant 111 Rep 352 Posts Drives: 2017 M3 / 2008 328i Join Date: Feb 2016 Location: Los Angeles, CA iTrader: (0)	MPE Installation I'm new to world of exhaust and installation, etc. I saw that someone was selling a MPE muffler only with a crack in it. If you were to install a MPE muffler only would you still get all the claimed weights benefits? Would the sound be that much different? Power difference with only the muffler? Or would I need to also install the new piping (downpipe? midpipe? I don't know what the difference is between those two pipes.) that comes with the complete MPE kit to get the horsepower and weight benefits? __________________ 2017 BMW M3 /// Atlantis Metallic Blue / Sakhir Orange
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07-18-2019, 12:09 PM	#2
Maitre_Absolut Captain 882 Rep 886 Posts Drives: M3 CS, Audi RS6 Join Date: Jun 2018 Location: Montreal iTrader: (0)	I'm pretty sure you can't install the "muffler only" without custom piping. It will not bolt to stock mid pipe no matter where you cut it. You need at least part of the rear MPE mid pipe to connect to the muffler. Someone tried with muffler only and posted pics. __________________ 23 Audi RS6 23 BMW X3 30e Msport 18 M3 CS 17 Porsche Macan GTS 14 Audi S4
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07-20-2019, 11:17 AM	#3
Nitrile Enlisted Member 19 Rep 48 Posts Drives: F80 M3 Join Date: Jun 2019 Location: Canada iTrader: (0)	Welding Titanium to SS is also another complication that most places will not do because of the complexity of it. Easier way is to clamp
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07-20-2019, 04:17 PM	#5
BzsBimmer Major General 3271 Rep 6,723 Posts Drives: '23 G80 FO M3, M3 & MY Tezzy's Join Date: Mar 2006 Location: Nor. Cal iTrader: (32)	Correct. Only way would be to cut the flared flanges on the muffler end and then connect to a custom pipe with clamps. Not easy but doable. You can probably forget about resale at that point unless you sell as a kit. I went to three muffler shops before I just bit the bullet and got the connecting pipes and hardware. YMMV
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