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

Jspark · 03-15-2019, 11:40 AM

First off I apologize if this isn't in the right spot not 100% how to use the forum just yet.

Anyway, I recently started smelling ALOT of exhaust after WOT or interstate driving, I would come to a stop and the smell would flood the car (Only if I had the windows down). I have not noticed a drop in power or any other performance issues outside of the smell. I recently changed my down pipe and mid pipe exhaust gaskets, neither seemed to be the issue. Would it be possible that it is another gasket or a larger issue?

Vortech supercharger, JDL UEL header, Catback exhaust.

Thanks for any help! and sorry for being a noob

MCTeeJ · 03-15-2019, 11:44 AM

Double check all of the gaskets. Even without a problem I always smell exhaust after coming to a stop. It's a catless thing for the most part.

Tcoat · 03-15-2019, 11:52 AM

Catless exhausts stink. That stink is why cats were invented in the first place. It used to happen to every car on the road before emission control systems and is not something I miss by any stretch. You smell it more when coming to a stop because the stink cloud is moving forward at the same speed as the car that is producing it. When you brake the cloud keeps moving forward even though the car has stopped. Roll up the windows before coming to a stop.

DarkPira7e · 03-15-2019, 12:01 PM

I also want to add that if you have one of those backfire tunes, have them fix it. It just retards the exhaust valve timing on decel and will add to this significantly.

Jspark · 03-15-2019, 12:28 PM

Recheck all gaskets? Even manifold and header?

Grady · 03-15-2019, 12:44 PM

Quote:

Originally Posted by Tcoat

Catless exhausts stink.

I love the smell of E85 in the morning!

03-15-2019, 11:52 AM	#3
Tcoat Senior Member Join Date: Jul 2014 Drives: 2020 Hakone Location: London, Ont Posts: 69,845 Thanks: 61,656 Thanked 108,283 Times in 46,456 Posts Mentioned: 2495 Post(s) Tagged: 50 Thread(s)	Catless exhausts stink. That stink is why cats were invented in the first place. It used to happen to every car on the road before emission control systems and is not something I miss by any stretch. You smell it more when coming to a stop because the stink cloud is moving forward at the same speed as the car that is producing it. When you brake the cloud keeps moving forward even though the car has stopped. Roll up the windows before coming to a stop. __________________ Racecar spelled backwards is Racecar, because Racecar.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Catless header exhaust smell?	Aegis3425	Engine, Exhaust, Transmission	18	03-18-2020 07:01 PM
Looking to buy header - question about exhaust fume smell	localhost	Engine, Exhaust, Transmission	29	08-15-2018 04:21 PM
Exhaust Fumes/Smell Question/Opinions	Mr.Impreza	Engine, Exhaust, Transmission	5	05-19-2016 09:57 AM
oil smell from exhaust..catless?	nickmerronesucks	Engine, Exhaust, Transmission	7	07-22-2015 05:44 PM
Invidia N1 sweet smell from exhaust	jonbonazza	Engine, Exhaust, Transmission	15	12-26-2013 01:18 PM

03-15-2019, 12:01 PM	#4
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 3,932 Thanks: 3,199 Thanked 4,095 Times in 2,045 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	I also want to add that if you have one of those backfire tunes, have them fix it. It just retards the exhaust valve timing on decel and will add to this significantly.

User Name		Remember Me?
Password