BRZ Exhaust details - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Fuzz · 11-15-2013, 08:48 AM

Hey guys.

Looking for zhorst options on my 86.

Quick Q. From where does the local BRZ 'performance' system replace the stock one on the 86. I would like something that replaces from and including the over pipe which will also eliminate the secondary cat. If the BRZ system does not do that then I will go with another option. BTW, what is the size / diameter of this system.

BTW, has anyone looked at local exhaust manifold (branch) developments ?

Moe · 11-15-2013, 12:42 PM

Sound advantage aside, I would be curious to see before and after dyno's on the BRZ exhaust.

sav · 11-15-2013, 04:35 PM

BRZ exhaust replaces the 2nd, unmonitored cat and resonators with a single, small muffler. The gains won't be huge with any system so I'd rather just go for the one that sound the best, else you're kinda cutting your nose to spite your face.

Fuzz · 11-16-2013, 03:20 AM

Quote:

Originally Posted by sav

BRZ exhaust replaces the 2nd, unmonitored cat and resonators with a single, small muffler. The gains won't be huge with any system so I'd rather just go for the one that sound the best, else you're kinda cutting your nose to spite your face.

Thanks Sav. Agreed, sound is very important and I am not looking for much more power yet but I would like to run the most optimal system.

I assume this system does not replace the over pipe

sav · 11-16-2013, 11:59 AM

Quote:

Originally Posted by Fuzz

Thanks Sav. Agreed, sound is very important and I am not looking for much more power yet but I would like to run the most optimal system.

I assume this system does not replace the over pipe

It does not.

sav · 11-16-2013, 12:00 PM

Front, mid and muffler.

Ryan86 · 11-16-2013, 12:32 PM

@sav that diagram is the stock exhaust and not the BRZ replacement ..?

sav · 11-16-2013, 02:39 PM

Quote:

Originally Posted by Ryan86

@sav that diagram is the stock exhaust and not the BRZ replacement ..?

Never said it was. Showing what gets replaced.

I can see how it could lead to confusion though.

Vladror · 12-10-2013, 03:30 AM

has anyone noticed a difference in fuel consumption since installed the BRZ exhaust.
I'm averaging 11.6 at the moment since install and i'm wondering if my driving style has changed or if the exhaust somehow affects fuel consumption?

Ryan86 · 12-10-2013, 03:54 AM

Ouch, 11.6
I average 7.6 normal and 9.5 pushing it.

sav · 12-10-2013, 04:03 AM

Quote:

Originally Posted by Vladror

has anyone noticed a difference in fuel consumption since installed the BRZ exhaust.
I'm averaging 11.6 at the moment since install and i'm wondering if my driving style has changed or if the exhaust somehow affects fuel consumption?

Driving style. My cons is still the same.

Moe · 12-10-2013, 04:06 AM

Quote:

Originally Posted by Vladror

has anyone noticed a difference in fuel consumption since installed the BRZ exhaust.
I'm averaging 11.6 at the moment since install and i'm wondering if my driving style has changed or if the exhaust somehow affects fuel consumption?

In my limited knowledge on this, the only way an exhaust can have that much of an impact is if the 02 sensors got messed up somehow during the install and the car is running very rich. However, someone can keep me honest on whether the mid section of the 86/BRZ does indeed have a "monitored" sensor for it to have this much of an impact.

sav · 12-10-2013, 06:11 AM

Nope, not monitored. I'm 99.9999% sure it's driving style. If I remember correctly my cons went up a bit then settled to where it was before once I got "used" to it.

Vladror · 12-10-2013, 08:11 AM

funnily enough i actually thought i was driving more economically cause i'm keeping the revs lower just to hear that rumble...
but it's probably the increase in summer traffic that's killing the economy as i haven't gotten any long drives in on the highway...

11-15-2013, 08:48 AM	#1
Fuzz Member Join Date: Oct 2013 Drives: '13 Toyota GT86 , VW Chico "1.4" Location: Cape Town, South Africa Posts: 44 Thanks: 0 Thanked 9 Times in 8 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	BRZ Exhaust details Hey guys. Looking for zhorst options on my 86. Quick Q. From where does the local BRZ 'performance' system replace the stock one on the 86. I would like something that replaces from and including the over pipe which will also eliminate the secondary cat. If the BRZ system does not do that then I will go with another option. BTW, what is the size / diameter of this system. BTW, has anyone looked at local exhaust manifold (branch) developments ?

11-15-2013, 04:35 PM	#3
sav Official anti-BS squad Join Date: Aug 2012 Drives: Toyota 86 High 6MT Location: South Africa Posts: 2,365 Thanks: 379 Thanked 452 Times in 309 Posts Mentioned: 72 Post(s) Tagged: 0 Thread(s)	BRZ exhaust replaces the 2nd, unmonitored cat and resonators with a single, small muffler. The gains won't be huge with any system so I'd rather just go for the one that sound the best, else you're kinda cutting your nose to spite your face. __________________ Toyota 86 High 6MT (Satin Pearl White) 95RON SAV Tuned

11-16-2013, 12:00 PM	#6
sav Official anti-BS squad Join Date: Aug 2012 Drives: Toyota 86 High 6MT Location: South Africa Posts: 2,365 Thanks: 379 Thanked 452 Times in 309 Posts Mentioned: 72 Post(s) Tagged: 0 Thread(s)	Front, mid and muffler. __________________ Toyota 86 High 6MT (Satin Pearl White) 95RON SAV Tuned

12-10-2013, 06:11 AM	#13
sav Official anti-BS squad Join Date: Aug 2012 Drives: Toyota 86 High 6MT Location: South Africa Posts: 2,365 Thanks: 379 Thanked 452 Times in 309 Posts Mentioned: 72 Post(s) Tagged: 0 Thread(s)	Nope, not monitored. I'm 99.9999% sure it's driving style. If I remember correctly my cons went up a bit then settled to where it was before once I got "used" to it. __________________ Toyota 86 High 6MT (Satin Pearl White) 95RON SAV Tuned

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11-15-2013, 12:42 PM	#2
Moe Senior Member Join Date: Oct 2013 Drives: Lexus IS250, Toyota 86 Location: Gauteng Posts: 159 Thanks: 58 Thanked 59 Times in 36 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Sound advantage aside, I would be curious to see before and after dyno's on the BRZ exhaust.

11-16-2013, 12:32 PM	#7
Ryan86 Road Warrior Join Date: Nov 2012 Drives: Toyota 86 Satin Pearl White Location: Durban, South Africa Posts: 1,651 Thanks: 181 Thanked 544 Times in 359 Posts Mentioned: 59 Post(s) Tagged: 0 Thread(s)	@sav that diagram is the stock exhaust and not the BRZ replacement ..?

12-10-2013, 03:30 AM	#9
Vladror Senior Member Join Date: Sep 2012 Drives: Toyota 86 M High - Dark Grey Location: Cape Town, South Africa Posts: 498 Thanks: 66 Thanked 109 Times in 52 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	has anyone noticed a difference in fuel consumption since installed the BRZ exhaust. I'm averaging 11.6 at the moment since install and i'm wondering if my driving style has changed or if the exhaust somehow affects fuel consumption?

12-10-2013, 03:54 AM	#10
Ryan86 Road Warrior Join Date: Nov 2012 Drives: Toyota 86 Satin Pearl White Location: Durban, South Africa Posts: 1,651 Thanks: 181 Thanked 544 Times in 359 Posts Mentioned: 59 Post(s) Tagged: 0 Thread(s)	Ouch, 11.6 I average 7.6 normal and 9.5 pushing it.

12-10-2013, 08:11 AM	#14
Vladror Senior Member Join Date: Sep 2012 Drives: Toyota 86 M High - Dark Grey Location: Cape Town, South Africa Posts: 498 Thanks: 66 Thanked 109 Times in 52 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	funnily enough i actually thought i was driving more economically cause i'm keeping the revs lower just to hear that rumble... but it's probably the increase in summer traffic that's killing the economy as i haven't gotten any long drives in on the highway...

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