Welding a muffler into the OEM midpipe? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Keenercarguy · 03-15-2017, 07:02 PM

Has anyone had any luck replacing the OEM midpipe resonator with a more effective muffler? Looking to tone down my axleback (WORKS ABM) just a tiny bit before I throw a HFC frontpipe on.

mav1178 · 03-15-2017, 08:13 PM

You want a larger resonator, yet you want to go with a HFC front pipe.

You should plan your front pipe out first before changing the OEM midpipe... the front pipe will make your system way louder if you do it wrong.

Keenercarguy · 03-15-2017, 09:11 PM

Quote:

Originally Posted by mav1178

You want a larger resonator, yet you want to go with a HFC front pipe.

You should plan your front pipe out first before changing the OEM midpipe... the front pipe will make your system way louder if you do it wrong.

Planning on a JDL Ultraquiet 2.5"
Or a much quieter catback and then the front pipe matters a little less
Also, a HFC frontpipe is a ways off anyway, never defined how long a time "before" was, first priority is getting the system maybe 10-15% quieter.

guybo · 03-15-2017, 10:11 PM

i had a cherry bomb welded on to my mid pipe just before the flange to the axle back section. It really reduces drone and lowers the tone of the exhaust.

phrosty · 03-15-2017, 11:54 PM

The ACE Laguna 90 mid pipe is like one big resonator.

ajcarson11 · 03-16-2017, 12:34 PM

I had a small bottle style muffler welded into my stock midpipe -- I instantly hated and regretted it. It was worth the small amount of cash at the time (when the shop realized that a vibrant ultra-quiet resonator wouldn't fit without big modification). It completely killed the tone and thrill of the exhaust, leaving me with a dull bassy exhaust note that was rather boomy. It also felt restrictive in general -- definite loss of 'urgency' in the acceleration. I'm very sensitive to these changes, especially in sound.

If you like your current tone but find it too loud then it is time to either install a Vibrant Ultraquiet resonator, or switch catback/axleback. Nothing else will bring it down enough (ask me about it... I've spent a lot of time customizing my exhaust and welding in different things).

Just my 2c!

sw20kosh · 03-16-2017, 01:25 PM

I've welded quite a few mufflers into midpipe.... they all increased cabin drone and also scraped all over the place due to sitting lower.

03-15-2017, 07:02 PM	#1
Keenercarguy Mountain Runner Join Date: Jan 2014 Drives: 2013 Subaru BRZ Limited 6MT Location: Boone, NC and Charlotte area NC Posts: 714 Thanks: 489 Thanked 142 Times in 105 Posts Mentioned: 8 Post(s) Tagged: 2 Thread(s)	Welding a muffler into the OEM midpipe? Has anyone had any luck replacing the OEM midpipe resonator with a more effective muffler? Looking to tone down my axleback (WORKS ABM) just a tiny bit before I throw a HFC frontpipe on. __________________ 2013 BRZ 6MT Limited: "Quick as Hell, on a Budget" Build • Ceramic Coated Gruppe-S UEL/OP • Konig Hypergrams • RS4 200tw • Koni Yellows, Eibach Springs • Ferodo DS2500's

03-15-2017, 11:54 PM	#5
phrosty Senior Member Join Date: Apr 2013 Drives: 2013 FR-S Location: Seattle Posts: 806 Thanks: 202 Thanked 321 Times in 199 Posts Mentioned: 18 Post(s) Tagged: 1 Thread(s)	The ACE Laguna 90 mid pipe is like one big resonator. __________________ 2013 Whiteout 6AT FR-S \| Perrin Inlet Tube + 2.75" CAI \| OpenFlash Header \| P&L Catback \| 4.88 Final Drive \| Dialed in OFT 2.0x Stage 2 E85 \| 18x8 Enkei Raijin + 225/40 Michelin Pilot Super Sport \| 17x7 Stock + 215/45 Michelin X-Ice Xi-2

03-16-2017, 01:25 PM	#7
sw20kosh Senior Member Join Date: Jul 2012 Drives: 2013 Black FR-S Location: SF Posts: 3,030 Thanks: 881 Thanked 2,014 Times in 990 Posts Mentioned: 153 Post(s) Tagged: 1 Thread(s)	I've welded quite a few mufflers into midpipe.... they all increased cabin drone and also scraped all over the place due to sitting lower. __________________ 86DRIVE Challenge

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03-15-2017, 08:13 PM	#2
mav1178 Senior Member Join Date: Apr 2013 Drives: 2005 Toyota Camry Location: 91745 Posts: 6,562 Thanks: 493 Thanked 6,099 Times in 3,030 Posts Mentioned: 95 Post(s) Tagged: 3 Thread(s)	You want a larger resonator, yet you want to go with a HFC front pipe. You should plan your front pipe out first before changing the OEM midpipe... the front pipe will make your system way louder if you do it wrong.

03-15-2017, 10:11 PM	#4
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	i had a cherry bomb welded on to my mid pipe just before the flange to the axle back section. It really reduces drone and lowers the tone of the exhaust.

03-16-2017, 12:34 PM	#6
ajcarson11 Senior Member Join Date: Jun 2015 Drives: 2013 Subaru BRZ Limited (Black) Location: Indianapolis Posts: 511 Thanks: 253 Thanked 206 Times in 149 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I had a small bottle style muffler welded into my stock midpipe -- I instantly hated and regretted it. It was worth the small amount of cash at the time (when the shop realized that a vibrant ultra-quiet resonator wouldn't fit without big modification). It completely killed the tone and thrill of the exhaust, leaving me with a dull bassy exhaust note that was rather boomy. It also felt restrictive in general -- definite loss of 'urgency' in the acceleration. I'm very sensitive to these changes, especially in sound. If you like your current tone but find it too loud then it is time to either install a Vibrant Ultraquiet resonator, or switch catback/axleback. Nothing else will bring it down enough (ask me about it... I've spent a lot of time customizing my exhaust and welding in different things). Just my 2c!

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