Weird issue with exhaust

Nooree01 · 07-15-2019, 07:47 AM

So I am having a weird issue, i woke up and i noticed my exhaust tone has changed it's much raspier, I have short tails and z1 hfc the exhaust sound different at wot too.

Anyone experienced this before?
I am thinking I have a leak at the y pipe because all the metal mesh around the flex part is torn apart.

My car used to pop loud but now I barely hear it

elhombre · 07-15-2019, 09:14 AM

I had an issue with my flex pipes on the y-pipe as well, they were badly worn like yours and one side had a hairline crack in it. Just jack the car up and see if their is any cracks or holes.

BettyZ · 07-15-2019, 12:39 PM

Quote:

Originally Posted by Nooree01

So I am having a weird issue, i woke up and i noticed my exhaust tone has changed it's much rapier, I have short tails and z1 hfc the exhaust sound different at wot too.

Anyone experienced this before?
I am thinking I have a leak at the y pipe because all the metal mesh around the flex part is torn apart.

My car used to pop loud but now I barely hear it

What a difference a missing "s" makes...

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Nooree01 · 07-15-2019, 01:47 PM

Quote:

Originally Posted by BettyZ

What a difference a missing "s" makes...

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Lol

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Nooree01 · 07-15-2019, 03:13 PM

Could it be an exhaust leak that developed after installing my hfc on the header sides

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BettyZ · 07-15-2019, 04:29 PM

Quote:

Originally Posted by Nooree01

Could it be an exhaust leak that developed after installing my hfc on the header sides

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You have a massive exhaust leak because your flex metal is all torn apart. Local auto store should sell patching kits.

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Nooree01 · 07-15-2019, 06:20 PM

Good thing I have another stock ypipe on standby

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SouthArk370Z · 07-15-2019, 07:05 PM

To confirm your diagnosis, get a length of water hose or similar, put one end to your ear, and move the free end under the car until the noise is the loudest.

Nooree01 · 07-17-2019, 01:32 PM

Turns out it's the driver side header and Cat gasket

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07-15-2019, 07:47 AM	#1 (permalink)
Nooree01 Base Member Join Date: Sep 2018 Location: Kansas City, MO Posts: 108 Drives: 2011 370z Gray 7AT Rep Power: 8	Weird issue with exhaust So I am having a weird issue, i woke up and i noticed my exhaust tone has changed it's much raspier, I have short tails and z1 hfc the exhaust sound different at wot too. Anyone experienced this before? I am thinking I have a leak at the y pipe because all the metal mesh around the flex part is torn apart. My car used to pop loud but now I barely hear it Last edited by Nooree01; 07-15-2019 at 01:48 PM.

07-15-2019, 07:05 PM	#8 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324199	To confirm your diagnosis, get a length of water hose or similar, put one end to your ear, and move the free end under the car until the noise is the loudest. BettyZ likes this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

07-17-2019, 01:32 PM	#9 (permalink)
Nooree01 Base Member Join Date: Sep 2018 Location: Kansas City, MO Posts: 108 Drives: 2011 370z Gray 7AT Rep Power: 8	Turns out it's the driver side header and Cat gasket Sent from my SM-G975U using Tapatalk elhombre likes this.

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07-15-2019, 09:14 AM	#2 (permalink)
elhombre Base Member Join Date: Feb 2016 Location: CT Posts: 93 Drives: 2009 370z Rep Power: 147	I had an issue with my flex pipes on the y-pipe as well, they were badly worn like yours and one side had a hairline crack in it. Just jack the car up and see if their is any cracks or holes.

07-15-2019, 03:13 PM	#5 (permalink)
Nooree01 Base Member Join Date: Sep 2018 Location: Kansas City, MO Posts: 108 Drives: 2011 370z Gray 7AT Rep Power: 8	Could it be an exhaust leak that developed after installing my hfc on the header sides Sent from my SM-G975U using Tapatalk

07-15-2019, 06:20 PM	#7 (permalink)
Nooree01 Base Member Join Date: Sep 2018 Location: Kansas City, MO Posts: 108 Drives: 2011 370z Gray 7AT Rep Power: 8	Good thing I have another stock ypipe on standby Sent from my SM-G975U using Tapatalk