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2010 2011 BMW 5 Series Forum F10 Finished Building my own down pipe and Quad Exhaust |
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03-11-2019, 06:01 PM | #1 |
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Well Over the weekend I decided to go ahead and just build my own down pipe. I had ordered one from a forum member and according to VRSF website and last 7 of my vin entered my 2015 supposedly took a 3.5" downpipe according to them. Well after receiving the down pipe from the member I quickly learned that mine was a 4" and was told this was true by another friend from the forum cause my car is EWG. I uninstalled my stock cat and downpipe and realized that it wasn't going to work. So I put everything back together, which the whole job taking off and putting back on took me all of 1 hour.
So I sold that downpipe to another forum member and decided on building my own. Cost me about $175 in material (All Stainless) and after we had the stock downpipe off it took us about 6 hours to build a jig, weld everything and re install the whole exhaust system. Which I don't feel is to bad. I didn't get a pic of our jig but I have a pic of the finished downpipe. Im leaving work now so if the pics didn't post I will post them when I get home!
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2015 F10 535i
FBO BM3 Pure Stage 2 Dorch Stage 2 HPFP E50 tune by Cary Jordan EOS EkP Module Walbro 525 LPFP Variant Argon 20? Wheels E60 M550i Sold “Im a crazy car guy” If it has a motor, it has my attention |
03-11-2019, 09:59 PM | #2 |
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Here is some pictures of the quad exhaust. This part cost me 160.00 in parts and I got the diffusor for 180.00. Turned out really well I think, wifey thinks its a little loud but mostly on cold start ups.
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2015 F10 535i
FBO BM3 Pure Stage 2 Dorch Stage 2 HPFP E50 tune by Cary Jordan EOS EkP Module Walbro 525 LPFP Variant Argon 20? Wheels E60 M550i Sold “Im a crazy car guy” If it has a motor, it has my attention |
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03-11-2019, 11:36 PM | #3 |
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03-11-2019, 11:46 PM | #4 |
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Very nice job on the DP. Can you elaborate on the parts you bought for the quad exhaust ? Any more pics from underneath ?
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03-12-2019, 12:00 AM | #5 | |
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I tig welded the tips and the small length of tube to the 2 longer pieces with the 45 degree bends and just mig welded those to the stock tubes on the car where I cut the mufflers off at. I really wanted to tig weld some v bands at that junction. Just ran out of time as I had plans. So I might go back and cut the 45s with the tips at the stock junction and weld 2 v band assemblies at that point.
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2015 F10 535i
FBO BM3 Pure Stage 2 Dorch Stage 2 HPFP E50 tune by Cary Jordan EOS EkP Module Walbro 525 LPFP Variant Argon 20? Wheels E60 M550i Sold “Im a crazy car guy” If it has a motor, it has my attention |
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03-12-2019, 12:16 AM | #6 |
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Absolutely stunning! Solid welds. Outstanding job!
Any thoughts on welding on brackets? Last edited by John H.; 03-12-2019 at 12:25 AM.. Reason: Added info. |
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03-12-2019, 08:20 AM | #7 |
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Welding on brackets like the stock down pipe? Most aftermarket companies dont have the stock bracket as well and with the one mount that has a bracket bolted to the trans I felt that would be enough to help keep it solid. Also the v band Part I welded to my downpipe was slightly thicker than stock so the clamp really tightened up nicely.
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2015 F10 535i
FBO BM3 Pure Stage 2 Dorch Stage 2 HPFP E50 tune by Cary Jordan EOS EkP Module Walbro 525 LPFP Variant Argon 20? Wheels E60 M550i Sold “Im a crazy car guy” If it has a motor, it has my attention |
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03-15-2019, 10:59 AM | #8 |
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Awesome build.
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03-18-2019, 07:32 PM | #9 |
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I like to see people doing things like this on their own cars and not for their job. Welds are ok. On the weld olet (O2 bung) next time a little less heat as you have a bunch of undercut along the top.
Otherwise solid job man. |
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03-18-2019, 07:45 PM | #10 |
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I appreciate the critique, yeah it got to hot on the 02 bungs but I was using 316 filler rod. wish I would of had 308 to use cause the bungs were mild steel to SS downpipe. But Im happy with how it came out over all and we made it under a tight time frame.
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2015 F10 535i
FBO BM3 Pure Stage 2 Dorch Stage 2 HPFP E50 tune by Cary Jordan EOS EkP Module Walbro 525 LPFP Variant Argon 20? Wheels E60 M550i Sold “Im a crazy car guy” If it has a motor, it has my attention |
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03-18-2019, 08:02 PM | #11 |
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Damn, that's a beautiful looking weld job.
May I ask where you got the diffuser from? |
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03-18-2019, 08:04 PM | #12 | |
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Where did you get the parts for it and did you just use the old DP as a template? |
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03-18-2019, 08:10 PM | #13 |
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Thank you!! 👍🏻 and I got it from Ebay. And I think there was only one left and I gave another member the link and I no longer see it there. So he must of purchased it sorry.
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2015 F10 535i
FBO BM3 Pure Stage 2 Dorch Stage 2 HPFP E50 tune by Cary Jordan EOS EkP Module Walbro 525 LPFP Variant Argon 20? Wheels E60 M550i Sold “Im a crazy car guy” If it has a motor, it has my attention |
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03-18-2019, 08:23 PM | #14 | ||
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Yeah we made our jig out of my stock down pipe.
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2015 F10 535i
FBO BM3 Pure Stage 2 Dorch Stage 2 HPFP E50 tune by Cary Jordan EOS EkP Module Walbro 525 LPFP Variant Argon 20? Wheels E60 M550i Sold “Im a crazy car guy” If it has a motor, it has my attention |
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03-18-2019, 11:06 PM | #16 | |
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This is the link to the ebay listing. https://rover.ebay.com/rover/0/0/0?m...2F263430128902
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2015 F10 535i
FBO BM3 Pure Stage 2 Dorch Stage 2 HPFP E50 tune by Cary Jordan EOS EkP Module Walbro 525 LPFP Variant Argon 20? Wheels E60 M550i Sold “Im a crazy car guy” If it has a motor, it has my attention |
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03-18-2019, 11:14 PM | #17 |
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Hmm. Thanks for posting the link . I wonder if it exactly the same as the ECS one ?
How is the fitment on yours? https://www.ecstuning.com/b-ecs-part...s/011818ecs01/ |
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03-18-2019, 11:21 PM | #18 | |
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2015 F10 535i
FBO BM3 Pure Stage 2 Dorch Stage 2 HPFP E50 tune by Cary Jordan EOS EkP Module Walbro 525 LPFP Variant Argon 20? Wheels E60 M550i Sold “Im a crazy car guy” If it has a motor, it has my attention |
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