MPE V4 issues

bd700 · 09-10-2021, 12:33 PM

Hi all,

I am having trouble attaching connecting pipes to the muffler section. They are nearly the exact same diameter and will not slip into place. I’m afraid to spread the inlets on the backbox for fear of damage or poor sealing afterward. Anyone seen this before? I searched and found no previous mention of it. Plaque states V4. Any advice would be appreciated.

Thank you!

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M43S7RO · 09-10-2021, 02:20 PM

Autozone will lend you exhaust pipe expanders to open up the diameter of the ends on your last pic.

I had an issue the first time I installed my Corsa. I took apart some of the pieces after putting them together initially then found they were too close to same diameter when trying to reassemble. Exhaust expanders did the trick.

bd700 · 09-10-2021, 02:53 PM

Thank you, was hoping not to have to do that as I imagine the chance for leaks goes up.

Richbot · 09-10-2021, 03:00 PM

It will leak slightly at that joint regardless. The included clamps will close things up to the extent you expand it a bit too much. You won't need much extra space. I used a screwdriver in the slotted expansion cuts to get them to slide in IIRC (this was like 8 years ago and it's still on there...so YMMV, lol)

bd700 · 09-10-2021, 07:03 PM

Thanks, good to know my issue isn’t a one-off. Brute force for the win.

PYE46M3 · 09-10-2021, 07:36 PM

id you buy this recently? I just got mine last week and my part number doesnt have X4 on it, it ends with -03

d

bd700 · 09-11-2021, 11:22 AM

I did. Ordered 9/1 from getbmwparts.com. Not sure what difference, if any, with v4. This one is the e90 version.

09-10-2021, 12:33 PM	#1
bd700 New Member 3 Rep 18 Posts Drives: 1999 M3, 2011 M3 Join Date: May 2012 Location: WA iTrader: (0)	MPE V4 issues Hi all, I am having trouble attaching connecting pipes to the muffler section. They are nearly the exact same diameter and will not slip into place. I’m afraid to spread the inlets on the backbox for fear of damage or poor sealing afterward. Anyone seen this before? I searched and found no previous mention of it. Plaque states V4. Any advice would be appreciated. Thank you! [ATTACH][ATTACH][/ATTACH][/ATTACH] Attached Images
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09-10-2021, 02:20 PM	#2
M43S7RO Major 503 Rep 1,055 Posts Drives: Jerez Black E92 M3 Join Date: Sep 2015 Location: Peoria, AZ iTrader: (13)	Autozone will lend you exhaust pipe expanders to open up the diameter of the ends on your last pic. I had an issue the first time I installed my Corsa. I took apart some of the pieces after putting them together initially then found they were too close to same diameter when trying to reassemble. Exhaust expanders did the trick.
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09-10-2021, 02:53 PM	#3
bd700 New Member 3 Rep 18 Posts Drives: 1999 M3, 2011 M3 Join Date: May 2012 Location: WA iTrader: (0)	Thank you, was hoping not to have to do that as I imagine the chance for leaks goes up.
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09-10-2021, 03:00 PM	#4
Richbot Major General 2759 Rep 5,483 Posts Drives: Jerez Black E90 Join Date: Sep 2007 Location: STL iTrader: (5)	It will leak slightly at that joint regardless. The included clamps will close things up to the extent you expand it a bit too much. You won't need much extra space. I used a screwdriver in the slotted expansion cuts to get them to slide in IIRC (this was like 8 years ago and it's still on there...so YMMV, lol) __________________
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09-10-2021, 07:03 PM	#5
bd700 New Member 3 Rep 18 Posts Drives: 1999 M3, 2011 M3 Join Date: May 2012 Location: WA iTrader: (0)	Thanks, good to know my issue isn’t a one-off. Brute force for the win.
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09-10-2021, 07:36 PM	#6
PYE46M3 Captain 852 Rep 659 Posts Drives: E46 M3, E92 M3 Join Date: Nov 2018 Location: CA iTrader: (0)	id you buy this recently? I just got mine last week and my part number doesnt have X4 on it, it ends with -03 d __________________ 2005 Phoenix Yellow E46 M3 6MT Coupe 2007 Imola Red Z4 M Coupe 2013 Interlagos Blue E92 M3 6MT ZCP CF roof
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09-11-2021, 11:22 AM	#7
bd700 New Member 3 Rep 18 Posts Drives: 1999 M3, 2011 M3 Join Date: May 2012 Location: WA iTrader: (0)	I did. Ordered 9/1 from getbmwparts.com. Not sure what difference, if any, with v4. This one is the e90 version.
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