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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Fri, Jan-05-2018, 02:05:23 PM   #1
BigRussia
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Default Section 2 xpipe exhaust install DIY?

Sorry for the noob question but I couldnt find any info or guides on installing just a section 2 xpipe exhaust (maybe it's just so easy no one needed one?). I searched on the forum and through google and even youtube with no luck. I haven't gotten under the car yet but was wondering if the chassis braces that go across have to be removed or can the pipes be slid out and in place without removing them? Also what torque should be used for the bolts? Any hiccups or headaches I should prepare for? Thanks
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Old Fri, Jan-05-2018, 02:50:27 PM   #2
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Default Re: Section 2 xpipe exhaust install DIY?

Get new gaskets, pb blast everything beforehand, yes the cross brackets need removed to drop it down. If it were me, I would spend 5 min removing the diffuser, drop sec 3 comfortably, drop / replace sec 2, reinstall 3 and pop diffuser in. Should make for smooth install.
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Old Fri, Jan-05-2018, 03:04:28 PM   #3
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Default Re: Section 2 xpipe exhaust install DIY?

Easiest for me was drop Section 1+2 together, because I had to cut and drill out the 1 to 2 bolts. Might want to support the muffler if you do this.
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Old Fri, Jan-05-2018, 03:25:03 PM   #4
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Default Re: Section 2 xpipe exhaust install DIY?

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Easiest for me was drop Section 1+2 together, because I had to cut and drill out the 1 to 2 bolts. Might want to support the muffler if you do this.
He's Miami - hopefully there isn't that much rust corrosion like we see
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Old Fri, Jan-05-2018, 04:39:48 PM   #5
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Default Re: Section 2 xpipe exhaust install DIY?

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Originally Posted by PITT M3 RR View Post
Get new gaskets, pb blast everything beforehand, yes the cross brackets need removed to drop it down. If it were me, I would spend 5 min removing the diffuser, drop sec 3 comfortably, drop / replace sec 2, reinstall 3 and pop diffuser in. Should make for smooth install.
Getting that section three in and out can be tricky to someone whose never done it, you have to remember that when it goes back in he's going to have to line it all up again and if it's a stock section three it's damn heavy.

Having done this in the past it really is simple, like PITT mentioned, get all new gaskets and hardware because unless it's a low miles/salt free car the hardware will be garbage, especially the gaskets, no way you're reusing those. Other than that it's pretty straight forward, remove the cross member piece, the exhaust is 3 bolts for each end of the pipe (12 total); PB Blaster will be your friend here, let that stuff soak for a bit. I'd avoid touching section 1 that much, it can be a tight fit around the header end.
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Old Fri, Jan-05-2018, 04:47:38 PM   #6
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Default Re: Section 2 xpipe exhaust install DIY?

Thanks for all the helpful tips and quick replies! Yeah it's a brand new SGT xpipe so has all new hardware thankfully. Going to try just dropping the section 2 without removing anything, if need more room then going to move the section 3 without dropping it. It's a Dinan muffler so at least its slightly lighter than OEM. Is there a torque rating for the cross bracket bolts?
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Old Fri, Jan-05-2018, 05:09:22 PM   #7
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Default Re: Section 2 xpipe exhaust install DIY?

^ Probably 18ft-lbs
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Old Fri, Jan-05-2018, 07:39:39 PM   #8
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Default Re: Section 2 xpipe exhaust install DIY?

Do I also need to remove the cross brace bar that goes from near the differential to the sides? I have the oem xpipe loose and trying to pull it out from either the front or back but its hanging and getting caught up on that bar. That brace seems like a big structural piece that isnt easy to remove
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Old Fri, Jan-05-2018, 07:54:41 PM   #9
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Default Re: Section 2 xpipe exhaust install DIY?

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Do I also need to remove the cross brace bar that goes from near the differential to the sides? I have the oem xpipe loose and trying to pull it out from either the front or back but its hanging and getting caught up on that bar. That brace seems like a big structural piece that isnt easy to remove
If you're referring to that "V" shaped brace then ya you should take it out, it's only three bolts I think, should be fairly simple. I don't know of a way to get the angle enough to slide the pipe out with it on.
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Old Fri, Jan-05-2018, 09:01:49 PM   #10
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Default Re: Section 2 xpipe exhaust install DIY?

Yep, V brace is 3 bolts and 56ft-lbs.
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Discussing Section 2 xpipe exhaust install DIY? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)