Exhaust smells like a burnt marshmallow. - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

disconnected · 02-20-2014, 12:23 AM

Ok well, maybe it doesn't smell THAT bad. So about 2 hours ago I installed my 2.5" perrin cbe and took it out for a quick test drive, (extremely excited btw) but upon pulling up to a stop light I got a fairly noticeable gush of an almost 'sweet' burning smell which seemed to be coming up from under the car. Needless to say I kinda freaked out a little hah. So I pulled over at a gas station immediately to check it out, and as I came to a stop I heard a slight intermittent squeak noise for maybe 2 minutes before it stopped!

So I busted out my phone and did a quick google search for possible reasons as to what was causing this before I drove it any further and got a few mixed reviews. One popular theory is that it was "that new exhaust smell" where manufacturer oils were burning off after being used for the first time. I'm a serious n00b when it comes to cars, but I'm not sure I buy that explanation, especially after hearing the squeaky noise. (although it hasn't squeaked since those brief few minutes) Is this to be expected when first driving a new exhaust? Or did I fk something up during install? Have any of yous guys/gals had any issues like this?

Also, during install I made sure that none of the piping came into contact with the differential or any other parts, although it was somewhat of a tight fit.

atledreier · 02-20-2014, 01:03 AM

Stuff getting properly hot for the first time, everything needs to settle, stuff expands and contracts, all kinds of residue burns off.... Don't worry about it!

My car is at 34.000km and still smell funny after a spirited drive.

brn12345 · 02-20-2014, 01:24 AM

You might also want to check the cam plate leak issue. It started on my car after about 3000miles. I now have on order a billet cam plate from Raceseng.

DaJo · 02-20-2014, 01:27 AM

It just means you bought a brand new exhaust system

... After a few drives, it'll all be gone. Don't lose sleep over it.

disconnected · 02-20-2014, 05:57 AM

Quote:

Originally Posted by atledreier

Stuff getting properly hot for the first time, everything needs to settle, stuff expands and contracts, all kinds of residue burns off.... Don't worry about it!

My car is at 34.000km and still smell funny after a spirited drive.

Alright! Cool thanks for the help! Sucks for the people who have to drive behind me haha!

Quote:

Originally Posted by DaJo

It just means you bought a brand new exhaust system

... After a few drives, it'll all be gone. Don't lose sleep over it.

For sure, thanks for the response!

Quote:

Originally Posted by brn12345

You might also want to check the cam plate leak issue. It started on my car after about 3000miles. I now have on order a billet cam plate from Raceseng.

I'll check into that. Thanks!

NYCsubaruBRZ · 03-02-2014, 05:07 AM

im down for some marshmallows. sounds good

DaJo · 03-02-2014, 05:09 AM

Quote:

Originally Posted by disconnected

Alright! Cool thanks for the help! Sucks for the people who have to drive behind me haha!

For sure, thanks for the response!

I'll check into that. Thanks!

Np buddy anytime... My ARK had the same described smell as well after I installed it...

It was like that for a good few days before it went away.

Esco · 11-01-2014, 11:23 AM

Just installed Invidia Front-pipe(resonated) + exhaust and I started getting a burnt smell. Took it to a muffler shop and they tightened everything, no leaks. But on my drive home I still got that burnt smell. Give it a few days??

wparsons · 11-01-2014, 02:57 PM

Yep, it's just burning coatings off the metal. It'll take a few days.

axelo · 11-02-2014, 08:45 AM

I got the same catback in on tuesday...i still get a "weird" smell, it isnt like marshmallows Though....everything on the exhaust is double checked... I also got tomei uel headers and overpipe so that may also be the change in smell...completely normal

Esco · 11-02-2014, 11:32 AM

Thanks!

02-20-2014, 12:23 AM	#1
disconnected Member Join Date: Feb 2014 Drives: 2013 FR-S Location: GOOD 'OL TEXAS Posts: 10 Thanks: 3 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Exhaust smells like a burnt marshmallow. Ok well, maybe it doesn't smell THAT bad. So about 2 hours ago I installed my 2.5" perrin cbe and took it out for a quick test drive, (extremely excited btw) but upon pulling up to a stop light I got a fairly noticeable gush of an almost 'sweet' burning smell which seemed to be coming up from under the car. Needless to say I kinda freaked out a little hah. So I pulled over at a gas station immediately to check it out, and as I came to a stop I heard a slight intermittent squeak noise for maybe 2 minutes before it stopped! So I busted out my phone and did a quick google search for possible reasons as to what was causing this before I drove it any further and got a few mixed reviews. One popular theory is that it was "that new exhaust smell" where manufacturer oils were burning off after being used for the first time. I'm a serious n00b when it comes to cars, but I'm not sure I buy that explanation, especially after hearing the squeaky noise. (although it hasn't squeaked since those brief few minutes) Is this to be expected when first driving a new exhaust? Or did I fk something up during install? Have any of yous guys/gals had any issues like this? Also, during install I made sure that none of the piping came into contact with the differential or any other parts, although it was somewhat of a tight fit.

02-20-2014, 01:24 AM	#3
brn12345 Senior Member Join Date: Oct 2012 Drives: BRZ Location: Bahrain Posts: 254 Thanks: 101 Thanked 137 Times in 63 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	You might also want to check the cam plate leak issue. It started on my car after about 3000miles. I now have on order a billet cam plate from Raceseng. __________________ 2013 Lightning Red - 6MT Perrin Inlet Hose ~ TRD Panel Air Filter ~ OEM Modified Snorkel ~ Revolution 4-2-1 EL Header ~ HKS Resonated Front Pipe ~ BRZedit self tune ~ KW Clubsport Coilovers ~ AP Racing Big Brake 4 Piston ~ Whiteline Front Endlinks ~ Perrin Rear Endlinks ~ WedsSport TC105N 17x8 42+ ~Dunlop Direzza II Star Spec 225/45/17 ~ STI Trunk Lid Spoiler

02-20-2014, 01:27 AM	#4
DaJo FT86Club Vancouver Join Date: Jun 2012 Drives: BRZ Sport-Tech; Drove: MR-S, AE86 Location: Vancouver, BC Posts: 2,532 Thanks: 391 Thanked 1,178 Times in 633 Posts Mentioned: 16 Post(s) Tagged: 2 Thread(s)	It just means you bought a brand new exhaust system ... After a few drives, it'll all be gone. Don't lose sleep over it. __________________ 1984 AE86 BT 20V 5MT 2007-2012 2000 MR-S 5MT 2010-2012 2013 BRZ Sport-Tech 6AT Since '12 (OEM+ STI tS Build) 2015 Lexus IS250 AWD F-Sport 2 2015-2018 2018 Lexus NX300 F-Sport 3 Since '18

11-02-2014, 08:45 AM	#10
axelo Banned Join Date: Oct 2012 Drives: Whiteout frs Location: PR Posts: 188 Thanks: 214 Thanked 86 Times in 52 Posts Mentioned: 2 Post(s) Tagged: 1 Thread(s)	Same exhaust...similar smell I got the same catback in on tuesday...i still get a "weird" smell, it isnt like marshmallows Though....everything on the exhaust is double checked... I also got tomei uel headers and overpipe so that may also be the change in smell...completely normal

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