My Quad Exhaust Project

Joe_435i · 03-12-2015, 03:02 AM

So, this was more of a hassle than I thought...but I'm here to help save you guys the trouble if you decide to go quad.

I attempted to move the charcoal canister to make room for a true dual exhaust. The charcoal canister is right in the path of where the passenger side exhaust pipes would go and I contacted several different mechanics and asked if they could move the canister either in front of the battery tray (behind the diffuser) or in back of the battery tray. All mechanics said it was too risky and would take a lot of work. I did find one mechanic that was able to move the canister an 1"1/2 back to make room for piping.

So, after brainstorming and talking with my exhaust guy, I still wanted to run true dual exhaust but customize how we ran the pipe. I wanted to do something similar to the Remus exhaust setup but straight pipe style. So I ran two 2.5" dual pipes off of an "X" pipe and ran the passenger side pipe directly in back of the diffuser and modified my passenger side exhaust tip. We actually ran the pipe into the side of the exhaust tip and that took some fabricating on behalf of my exhaust guy. He chopped the back of the exhaust tip off, welded a flat plate on the back to keep clear from the charcoal canister and welded the 2.5" pipe into the side of the exhaust tip.

In conclusion, this project took some time but I'm happy with the result. Also, the sound is just right. I think 3" dual piping would have been way too obnoxious and a definite loss in back pressure and low end power. I definitely notice some gains in power, the car feels lighter, and overall performance seems a lot smoother versus the stock setup.

Rear Diffuser was purchased at http://www.rwcarbon.com/ Check em out! Nice dudes

Zombie1 · 03-12-2015, 07:05 AM

That looks great man, post a video up.

e36addict · 03-12-2015, 07:12 AM

I never comment on quad exhaust, because I hate them. This is the first one i've seen that actually looks pretty nice.. Nice work!

Marc08EX · 03-12-2015, 08:35 AM

Damn that looks really good.

Pls post some sound clips!

tglazed · 03-12-2015, 09:31 AM

What tips are those? They look great

eric@helix · 03-12-2015, 09:52 AM

The nice thing about yours is that you built them to fit your CF diffuser. I retrofitted a 1M exhaust (with all the 1M cannister, battery box bits) so right now I'm rocking a modified stock diffuser, which was harder to cut neatly than I had hoped.

suspenceful · 03-12-2015, 10:26 AM

Looks great.

I'd love to see a picture of the passenger side connections. It's cut off in the 2nd picture.

Also, sound clips!

Alex@YSPECtuning · 03-12-2015, 11:58 AM

Looking good!

mike@x-ph.com · 03-12-2015, 12:25 PM

Looks good !!

highbrowed · 03-12-2015, 02:27 PM

can you post some more pics from underneath? i'm interested in how the canister was relocated.

Joe_435i · 03-12-2015, 02:35 PM

Quote:

Originally Posted by tglazed

What tips are those? They look great

Dual 3.5", double walled, and staggered. I'll ask my guy where he ordered them from ;]

Joe_435i · 03-12-2015, 02:42 PM

Quote:

Originally Posted by eric@helix

The nice thing about yours is that you built them to fit your CF diffuser. I retrofitted a 1M exhaust (with all the 1M cannister, battery box bits) so right now I'm rocking a modified stock diffuser, which was harder to cut neatly than I had hoped.

Yeah, I was thinking about doing that too, but didn't think the cut would turn out as neatly as the original cutout. Was converting to a 1M battery setup difficult? And how much?

Joe_435i · 03-12-2015, 02:44 PM

Quote:

Originally Posted by suspenceful

Looks great.

I'd love to see a picture of the passenger side connections. It's cut off in the 2nd picture.

Also, sound clips!

I'll try and snap some more pics too.

kirkbar · 03-12-2015, 04:17 PM

Quote:

Originally Posted by Joe_135i

Yeah, I was thinking about doing that too, but didn't think the cut would turn out as neatly as the original cutout. Was converting to a 1M battery setup difficult? And how much?

I think he just moved the canister and did not need to do the battery tray.

ShocknAwe · 03-12-2015, 05:10 PM

Thanks for actually taking pictures. Looks good BTW. Those tips are great.

Ultimateone · 03-12-2015, 05:59 PM

Great job, I think I will be attempting this next year or over the next winter, looks badass.

Grinchxvx · 03-13-2015, 09:41 AM

Those tips look really good, I'll be going this route soon also.

hawkm3 · 03-13-2015, 12:02 PM

Looks damn good!

edisapimp · 03-13-2015, 03:51 PM

It's pretty. Have you any pictures of it when it is on the ground?

RW Carbon · 03-19-2015, 01:54 PM

Looks great! Nicely done on the quad exhaust setup!

highbrowed · 03-20-2015, 01:35 PM

Did they re-use the same stock evap canister lines, or did they extend/replace them with longer lines? Do you know?

Joe_435i · 03-20-2015, 03:12 PM

Quote:

Originally Posted by highbrowed

Did they re-use the same stock evap canister lines, or did they extend/replace them with longer lines? Do you know?

We were going to extend the canister lines but my mechanic didn't feel comfortable completing that job. I went to another mechanic and said he could extend the lines, but mentioned going to Home Depot for parts and I passed on that, lol. So, we kept the factory lines in tact and just made sure when we pushed back the canister none of the lines were bent/pinched against the frame of the car.

03-12-2015, 03:02 AM	#1
Joe_435i Private First Class 61 Rep 151 Posts Drives: BMW 435i Join Date: Aug 2014 Location: Temecula, Ca iTrader: (0)	My Quad Exhaust Project So, this was more of a hassle than I thought...but I'm here to help save you guys the trouble if you decide to go quad. I attempted to move the charcoal canister to make room for a true dual exhaust. The charcoal canister is right in the path of where the passenger side exhaust pipes would go and I contacted several different mechanics and asked if they could move the canister either in front of the battery tray (behind the diffuser) or in back of the battery tray. All mechanics said it was too risky and would take a lot of work. I did find one mechanic that was able to move the canister an 1"1/2 back to make room for piping. So, after brainstorming and talking with my exhaust guy, I still wanted to run true dual exhaust but customize how we ran the pipe. I wanted to do something similar to the Remus exhaust setup but straight pipe style. So I ran two 2.5" dual pipes off of an "X" pipe and ran the passenger side pipe directly in back of the diffuser and modified my passenger side exhaust tip. We actually ran the pipe into the side of the exhaust tip and that took some fabricating on behalf of my exhaust guy. He chopped the back of the exhaust tip off, welded a flat plate on the back to keep clear from the charcoal canister and welded the 2.5" pipe into the side of the exhaust tip. In conclusion, this project took some time but I'm happy with the result. Also, the sound is just right. I think 3" dual piping would have been way too obnoxious and a definite loss in back pressure and low end power. I definitely notice some gains in power, the car feels lighter, and overall performance seems a lot smoother versus the stock setup. Rear Diffuser was purchased at http://www.rwcarbon.com/ Check em out! Nice dudes Attached Images Last edited by Joe_435i; 03-21-2015 at 03:01 PM..
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03-12-2015, 07:05 AM	#2
Zombie1 Colonel 172 Rep 2,347 Posts Drives: BMW 135i 2010 Join Date: Jul 2012 Location: Island long iTrader: (6)	That looks great man, post a video up. __________________ Mods:-Berkexhaust -alpinaB3flash -CobbAP -Cobb FMIC -ER charge pipe tialQ bov -M3 front sway bar -M3 subframe bushings -M3 front upper and lower control arms -M3 guide rods -M3 rear upper control arms -Mfactory LSD -defiv lockdown kit -TC Kline SA coilovers /camber plates- HP rear toe arms
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03-12-2015, 07:12 AM	#3
e36addict Captain 137 Rep 952 Posts Drives: 2013 X1 35iX Join Date: Jul 2013 Location: Tim @ BMW of Dallas iTrader: (5)	I never comment on quad exhaust, because I hate them. This is the first one i've seen that actually looks pretty nice.. Nice work! __________________ 13 X1 35iX, 98 Z3 2.8, 01 M Coupe, 96 Z3 1.9 DASC, 95 318ti, 13 smart fortwo
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03-12-2015, 08:35 AM	#4
Marc08EX Lieutenant 139 Rep 575 Posts Drives: 2011 E82 135i Join Date: Aug 2011 Location: AZ iTrader: (5)	Damn that looks really good. Pls post some sound clips! __________________ 2011 135i 6MT \| Alpine White \| Terracotta Boston Leather \| M-Sport \| BMW Performance Exhaust Resonator Delete \| Active Autowerke Signature Exhaust \| BMW Performance Suspension \| Blackline LCI Taillights \| BMW Performance CF Spoiler \| CF Rear Diffuser \| PPK \| E92 M3 FSB \| Matte Black Kidney Grilles \| VMR V710 Jet Anthracite \| Michelin PSS \| BMW SS Pedals
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03-12-2015, 09:31 AM	#5
tglazed Lieutenant 46 Rep 406 Posts Drives: 135i Join Date: Feb 2014 Location: SLC, Utah iTrader: (1)	What tips are those? They look great
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03-12-2015, 09:52 AM	#6
eric@helix 210 Rep 1,161 Posts Drives: 01 M Coupe, 08 135i, '12 328i Join Date: Jul 2007 Location: Philadelphia iTrader: (0)	The nice thing about yours is that you built them to fit your CF diffuser. I retrofitted a 1M exhaust (with all the 1M cannister, battery box bits) so right now I'm rocking a modified stock diffuser, which was harder to cut neatly than I had hoped.
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03-12-2015, 10:26 AM	#7
suspenceful Major 1024 Rep 1,264 Posts Drives: 2015 M3, 2008 135i, 2009 335i Join Date: Feb 2014 Location: WI iTrader: (9)	Looks great. I'd love to see a picture of the passenger side connections. It's cut off in the 2nd picture. Also, sound clips! __________________ 750whp 135i Build \| Budget 335i Build \| F80 M3 Build 🎬 YouTube channel (35K+ subs): youtube.com/jakespence135 📷 Follow me on Instagram: instagram.com/jakespence 🏁 Shop BMW merchandise: bimmerstreet.com
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03-12-2015, 11:58 AM	#8
Alex@YSPECtuning SoCal Tuning Specialist 14 Rep 77 Posts Drives: BMW 135i (Project car) Join Date: Jan 2015 Location: Newport Beach, CA iTrader: (-1)	Looking good! __________________ Follow us @ www.Facebook.com/YSPECtuning Like us on Instagram @ YSPECtuning
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03-12-2015, 12:25 PM	#9
mike@x-ph.com Joint Chiefs of Staff 24199 Rep 190,807 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Looks good !! __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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03-12-2015, 02:27 PM	#10
highbrowed Boost Addict 335 Rep 1,244 Posts Drives: 135i 6MT w/ N54 Delete Join Date: Jul 2014 Location: South Florida iTrader: (4)	can you post some more pics from underneath? i'm interested in how the canister was relocated.
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03-12-2015, 05:10 PM	#15
ShocknAwe 1Addict 3234 Rep 7,894 Posts Drives: E82 Mutt, M57 Truck Join Date: Jul 2012 Location: Charleston iTrader: (22)	Thanks for actually taking pictures. Looks good BTW. Those tips are great. __________________ 2010 135i 6MT Jet Black N54/3 FE82 Mutt \| BUILD THREAD \| GARAGE SALE
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03-12-2015, 05:59 PM	#16
Ultimateone OG E46Fanatic 173 Rep 845 Posts Drives: 24 Champ White CTR Join Date: Dec 2014 Location: Boston, MA iTrader: (4)	Great job, I think I will be attempting this next year or over the next winter, looks badass.
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03-13-2015, 09:41 AM	#17
Grinchxvx Lieutenant 29 Rep 414 Posts Drives: 2008 135i Join Date: Apr 2014 Location: Salt Lake City iTrader: (0)	Those tips look really good, I'll be going this route soon also. __________________ 2008 Aw/Coral Red Manual 135i Coupe- JB4 G5 + BMS race flash, BMS meth kit, VRSF DP, Big tom Ic, BMS chinese tester CP, Custom Muffler Delete, BMS Oil Cooler Valve, Cowl Filters, Clutch Stop, B&M Short Shifter, Spec Stg 2+ Clutch W/ Oem dmfw, Vmr V710, KW v2, M RSFB, 1M Front and rear Bumper, Performance Side Skirts, slek trunk, Lci blacklines.]
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03-13-2015, 12:02 PM	#18
hawkm3 Lieutenant 57 Rep 477 Posts Drives: 2009 135i Join Date: Jun 2014 Location: Central Cali iTrader: (4)	Looks damn good!
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03-13-2015, 03:51 PM	#19
edisapimp Civil Rights Activist 115 Rep 949 Posts Drives: E46 Sedan, E88 Vert Join Date: Apr 2013 Location: Long Island iTrader: (0)	It's pretty. Have you any pictures of it when it is on the ground? __________________ E88 Crimson Red Vert MSport 6MT - Listing your mods in your signature is lame. BMS DCI/MHD E30 Flash!!/AA Sport FMIC/VRSF CP w Tial BOV/VRSF 3" DPs/550i clutch w SPEC SMFW/Apex EC-7s/Whiteline RSFB/E92 M3 FCAs/Bilstein B12 Pro Kit/VRSF inlets
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03-19-2015, 01:54 PM	#20
RW Carbon Captain 197 Rep 824 Posts Drives: G80 M3 & G87 M2 Join Date: Jun 2014 Location: 3941 E La Palma Ave Anaheim CA 92807 iTrader: (1)	Looks great! Nicely done on the quad exhaust setup! __________________ Carbon fiber for the everyday driver: rwcarbon.com 3941 E La Palma Ave Anaheim CA, 92870 info@rwcarbon.com / (714) 328-4406 Instagram/Tiktok/Facebook: @rwcarbon
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03-20-2015, 01:35 PM	#21
highbrowed Boost Addict 335 Rep 1,244 Posts Drives: 135i 6MT w/ N54 Delete Join Date: Jul 2014 Location: South Florida iTrader: (4)	Did they re-use the same stock evap canister lines, or did they extend/replace them with longer lines? Do you know?
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