Steam/smoke out of the two exhaust tips is not same - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Busybee · 12-06-2019, 02:52 AM

Hi,

With start of the cold season I realized that the steam/smoke that comes out of the exhaust when you start your car is not same. The steam is coming stronger from the left exhaust. Is this something related to the design of the OEM exhaust?

Another quick question is about the air filter in the engine bay. I recently changed the filter with the same OEM one. Since it can be installed one way it was straight forward. I made sure that the clips at the back are fine etc. When I checked carefully, despite the back of the box is closed with the clips very nicely I still can see a little of my filter. It’s not something that is coming out. I did not pay attention whether the default was also visible. Just wanted to ask if this is the way it fits.

Thanks

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scottman · 12-06-2019, 05:17 AM

Everything is good, Beeman

bcj · 12-06-2019, 12:17 PM

There's a single pipe to the rear box then splits coming out.
The total length is slightly different and one will heat up quicker.
Silly to have twin tips out of a single exhaust other than to look cool or something.

DarkPira7e · 12-06-2019, 01:07 PM

Gas unfortunately is like water; once you add a split in the path, it will prefer one path over the other and not divide throughput evenly.

Basically, this is normal. Single exit is the cure

ActionMaxon · 12-06-2019, 03:08 PM

Mine is bone stock, sub 20k. Does same thing. Agree with others. No worries.

Ultramaroon · 12-06-2019, 05:43 PM

Stupid dual exit design is stupid.

Busybee · 12-06-2019, 08:02 PM

Thanks to all for the response!
Agree! it’s stupid but I feel much better

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12-06-2019, 02:52 AM	#1
Busybee Senior Member Join Date: Feb 2018 Drives: BRZ limited Location: MA and NY Posts: 426 Thanks: 1,731 Thanked 220 Times in 110 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Steam/smoke out of the two exhaust tips is not same Hi, With start of the cold season I realized that the steam/smoke that comes out of the exhaust when you start your car is not same. The steam is coming stronger from the left exhaust. Is this something related to the design of the OEM exhaust? Another quick question is about the air filter in the engine bay. I recently changed the filter with the same OEM one. Since it can be installed one way it was straight forward. I made sure that the clips at the back are fine etc. When I checked carefully, despite the back of the box is closed with the clips very nicely I still can see a little of my filter. It’s not something that is coming out. I did not pay attention whether the default was also visible. Just wanted to ask if this is the way it fits. Thanks Sent from my iPhone using Tapatalk __________________ Mazda 323F BA 1997 - Overseas Mazda 323 BG 1994 - Sold Mazda 323 BG 1991 - Sold

12-06-2019, 03:08 PM	#5
ActionMaxon Professional Auto Fixer Join Date: May 2019 Drives: 2016 Oceanic FR-S as Designed Location: Oregon Posts: 123 Thanks: 41 Thanked 70 Times in 46 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Mine is bone stock, sub 20k. Does same thing. Agree with others. No worries. __________________ Work Hard. Play Hard. 2016 Oceanic

12-06-2019, 05:43 PM	#6
Ultramaroon 義理チョコ Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,870 Thanks: 52,132 Thanked 36,520 Times in 18,921 Posts Mentioned: 1107 Post(s) Tagged: 9 Thread(s)	Stupid dual exit design is stupid. __________________ service manuals

12-06-2019, 08:02 PM	#7
Busybee Senior Member Join Date: Feb 2018 Drives: BRZ limited Location: MA and NY Posts: 426 Thanks: 1,731 Thanked 220 Times in 110 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Thanks to all for the response! Agree! it’s stupid but I feel much better Sent from my iPhone using Tapatalk __________________ Mazda 323F BA 1997 - Overseas Mazda 323 BG 1994 - Sold Mazda 323 BG 1991 - Sold

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12-06-2019, 05:17 AM	#2
scottman Member Join Date: Jun 2012 Drives: 13 mt fr-s Location: Halton Hills, Ont. Posts: 171 Thanks: 73 Thanked 96 Times in 48 Posts Mentioned: 0 Post(s) Tagged: 1 Thread(s)	Everything is good, Beeman

12-06-2019, 01:07 PM	#4
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 3,934 Thanks: 3,200 Thanked 4,095 Times in 2,045 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	Gas unfortunately is like water; once you add a split in the path, it will prefer one path over the other and not divide throughput evenly. Basically, this is normal. Single exit is the cure

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