Muffler Bypass Valve - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Chad_W · 10-02-2016, 11:24 AM

Has anybody attempted a custom bypass valve like this? I think it could be a good set-up for those of us who want a little bit of a Jekyl and Hyde experience.

Chad_W · 10-02-2016, 11:32 AM

A unit like this might be perfect for it

https://www.summitracing.com/parts/q...c225/overview/

JoeC · 10-02-2016, 11:39 AM

I have a buddy who did this on his highly modified legacy GT. It's pretty wicked just dumping out to a straight pipe.

Iceman · 10-03-2016, 01:22 AM

I know someone who's done it:

[ame="https://www.youtube.com/watch?v=464bFBbjNLA"]GT86 sound by pass mÃ³vil - YouTube[/ame]

humfrz · 10-03-2016, 02:15 AM

To me, that doesn't look/sound like it would be worth the money, time and trouble.....

Now, back-in-the-day, when we would place the cut-out at the first turn in the exhaust pipe ........ THAT made a wicked sound ......

(but, they usually leaked .....

)

humfrz

Chad_W · 10-03-2016, 11:57 AM

I like the way the system tucks up under there, but I'm not so sure about the exhaust note....louder isn't always better. I guess the only way to really tell if you like it to try it with whatever exhaust you have because your header/frontpipe/midpipe is definitely going to effect your final outcome

Wil · 10-03-2016, 12:07 PM

Hi,
I'm actually doing something pretty similar.
Discover it here:
http://www.ft86club.com/forums/showthread.php?t=111280

churchx · 10-03-2016, 05:17 PM

But way valve is routed here makes it look simpler then also cutting muffler.
Still, loving idea itself, quiet when cruising or starting up in quiet neighbourhoods, and loud when you want it to be with simple press of a button.

Chad_W · 10-03-2016, 07:38 PM

Quote:

Originally Posted by Wil

Hi,
I'm actually doing something pretty similar.
Discover it here:
http://www.ft86club.com/forums/showthread.php?t=111280

That is a pretty bold approach! I like the idea, why did you choose such a invasive set-up instead of a more external one?

Wil · 10-04-2016, 06:20 AM

Quote:

Originally Posted by Chad_W

That is a pretty bold approach! I like the idea, why did you choose such a invasive set-up instead of a more external one?

Because the valve I ordered is so big there was no other choice!
The setup Iceman shared with us is pretty neat.
But the guy in the video is using another kind of valve, a smaller one (the size of a turbo blow off valve).
The advantage of my setup is that I can easily replace the valve if it fails.

Since I am sometimes "trackdaying", the valve will be exposed to very high temperatures and, honestly, I doubt it will resist in such conditions, even if it looks pretty well-built.

10-02-2016, 11:24 AM	#1
Chad_W Senior Member Join Date: Mar 2013 Drives: 2013 BRZ DGM Location: Westchester NY Posts: 113 Thanks: 15 Thanked 28 Times in 13 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Muffler Bypass Valve Has anybody attempted a custom bypass valve like this? I think it could be a good set-up for those of us who want a little bit of a Jekyl and Hyde experience.

10-03-2016, 01:22 AM	#4
Iceman Senior Member Join Date: Jun 2012 Drives: GT86 Location: Nordschleife Posts: 210 Thanks: 456 Thanked 188 Times in 91 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I know someone who's done it: [ame="https://www.youtube.com/watch?v=464bFBbjNLA"]GT86 sound by pass mÃ³vil - YouTube[/ame] __________________ Youtube channel: https://www.youtube.com/c/ÓscarFaraday IG: @oscarfaraday

10-03-2016, 02:15 AM	#5
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,432 Thanks: 29,826 Thanked 32,845 Times in 16,844 Posts Mentioned: 715 Post(s) Tagged: 2 Thread(s)	To me, that doesn't look/sound like it would be worth the money, time and trouble..... Now, back-in-the-day, when we would place the cut-out at the first turn in the exhaust pipe ........ THAT made a wicked sound ...... (but, they usually leaked .....) humfrz

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10-02-2016, 11:32 AM	#2
Chad_W Senior Member Join Date: Mar 2013 Drives: 2013 BRZ DGM Location: Westchester NY Posts: 113 Thanks: 15 Thanked 28 Times in 13 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	A unit like this might be perfect for it https://www.summitracing.com/parts/q...c225/overview/

10-02-2016, 11:39 AM	#3
JoeC Senior Member Join Date: Apr 2014 Drives: Subaru BRZ Limited Location: Colorado Posts: 354 Thanks: 477 Thanked 222 Times in 118 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	I have a buddy who did this on his highly modified legacy GT. It's pretty wicked just dumping out to a straight pipe.

10-03-2016, 11:57 AM	#6
Chad_W Senior Member Join Date: Mar 2013 Drives: 2013 BRZ DGM Location: Westchester NY Posts: 113 Thanks: 15 Thanked 28 Times in 13 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I like the way the system tucks up under there, but I'm not so sure about the exhaust note....louder isn't always better. I guess the only way to really tell if you like it to try it with whatever exhaust you have because your header/frontpipe/midpipe is definitely going to effect your final outcome

10-03-2016, 12:07 PM	#7
Wil Senior Member Join Date: Jun 2015 Drives: Drives like a crab. Location: Belgium Posts: 101 Thanks: 2 Thanked 42 Times in 14 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Hi, I'm actually doing something pretty similar. Discover it here: http://www.ft86club.com/forums/showthread.php?t=111280

10-03-2016, 05:17 PM	#8
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,334 Thanks: 698 Thanked 2,086 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	But way valve is routed here makes it look simpler then also cutting muffler. Still, loving idea itself, quiet when cruising or starting up in quiet neighbourhoods, and loud when you want it to be with simple press of a button.

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