Mind boggling exhaust noise

Mikriman · 06-15-2019, 12:39 PM

So I had an ARK GRiiP Exhaust and Z1 HFC’s installed by AWD Tuning and had the car tuned. Seemed to run fine for about 2 weeks and if I attached the link correctly you can hear that annoying noise of what sounds like a Cicada stuck in the pipe. What’s odd is: on the lift, the noise happens after letting off the throttle, when driving, it happens when accelerating at high rpms.
If anyone has any ideas - the guys at AWD Tuning are a bit stumped as well.

BettyZ · 06-15-2019, 01:00 PM

Quote:

Originally Posted by Mikriman

So I had an ARK GRiiP Exhaust and Z1 HFC’s installed by AWD Tuning and had the car tuned. Seemed to run fine for about 2 weeks and if I attached the link correctly you can hear that annoying noise of what sounds like a Cicada stuck in the pipe. What’s odd is: on the lift, the noise happens after letting off the throttle, when driving, it happens when accelerating at high rpms.

If anyone has any ideas - the guys at AWD Tuning are a bit stumped as well.

Scope the inside of the piping?

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Nooree01 · 06-15-2019, 01:05 PM

It sounds like it has something to do with the hiss our car makes when letting off the gas maybe your cat material broke

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fryzia23 · 06-15-2019, 04:21 PM

Its normal. My ark exhaust did the same exact noise off throttle. VQ hiss. Most pronounced at the X pipe section. Cant do anything about it unless you go with factory cats.

Mikriman · 06-15-2019, 06:00 PM

So it’s a HFC issue, ARK Exhaust issue, or a combination of both along with the VQ hiss?? I find that hard to accept...

BettyZ · 06-15-2019, 06:06 PM

Quote:

Originally Posted by Mikriman

So it’s a HFC issue, ARK Exhaust issue, or a combination of both along with the VQ hiss?? I find that hard to accept...

That sounds far, far louder and different than my VQ hiss with Berk HFCs. Honestly it sounds almost like something's loose in there.

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Nooree01 · 06-15-2019, 06:09 PM

Quote:

Originally Posted by BettyZ

That sounds far, far louder and different than my VQ hiss with Berk HFCs. Honestly it sounds almost like something's loose in there.

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For the sake of it take a look inside the exhaust and the cats to rule out that anything is loose.

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Mikriman · 06-15-2019, 06:27 PM

Thanks—that’s my next step after speaking with Z1 and ARK to get their thoughts....

fryzia23 · 06-15-2019, 06:53 PM

I know its hard to believe but it was bothering me too and I also looked into the exhaust and found nothing. Eventually sold it and went with FI exhaust with their test pipes. Still has the VQ hiss but not as bad as ARK did.

Rusty · 06-15-2019, 09:49 PM

The VQ hiss bits again. There are a bunch of threads on it. Each different exhaust will change it's pitch and tone some what. I think it's neat.

Maestro666 · 06-19-2019, 08:23 PM

I have the Ark Grip cat back and the FI RHFC's installed and I get absolutely zero hiss (definitely no rattle).

A little disappointed I don't get some badass hissing actually

Mikriman · 06-19-2019, 09:21 PM

Quote:

Originally Posted by Maestro666

I have the Ark Grip cat back and the FI RHFC's installed and I get absolutely zero hiss (definitely no rattle).

A little disappointed I don't get some badass hissing actually

Maestro666, may I add..........YOU SUCK.

I may just go that route, thanx for your input

06-15-2019, 12:39 PM	#1 (permalink)
Mikriman Base Member Join Date: Mar 2018 Location: DFW Posts: 26 Drives: 2016 370Z Nismo 7AT Rep Power: 7	Mind boggling exhaust noise So I had an ARK GRiiP Exhaust and Z1 HFC’s installed by AWD Tuning and had the car tuned. Seemed to run fine for about 2 weeks and if I attached the link correctly you can hear that annoying noise of what sounds like a Cicada stuck in the pipe. What’s odd is: on the lift, the noise happens after letting off the throttle, when driving, it happens when accelerating at high rpms. If anyone has any ideas - the guys at AWD Tuning are a bit stumped as well. Last edited by Mikriman; 06-15-2019 at 12:46 PM.

06-15-2019, 01:05 PM	#3 (permalink)
Nooree01 Base Member Join Date: Sep 2018 Location: Kansas City, MO Posts: 108 Drives: 2011 370z Gray 7AT Rep Power: 7	It sounds like it has something to do with the hiss our car makes when letting off the gas maybe your cat material broke Sent from my SM-G975U using Tapatalk Spartan 1771 likes this.

06-15-2019, 09:49 PM	#10 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,180 Drives: 2011 Nismo GM 6M Rep Power: 2684437	The VQ hiss bits again. There are a bunch of threads on it. Each different exhaust will change it's pitch and tone some what. I think it's neat. Spooler, ColtronZ and BettyZ like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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06-15-2019, 04:21 PM	#4 (permalink)
fryzia23 Enthusiast Member Join Date: Dec 2010 Location: new jersey Posts: 452 Drives: 2011 MB 370Z NISMO Rep Power: 1245	Its normal. My ark exhaust did the same exact noise off throttle. VQ hiss. Most pronounced at the X pipe section. Cant do anything about it unless you go with factory cats.

06-15-2019, 06:00 PM	#5 (permalink)
Mikriman Base Member Join Date: Mar 2018 Location: DFW Posts: 26 Drives: 2016 370Z Nismo 7AT Rep Power: 7	So it’s a HFC issue, ARK Exhaust issue, or a combination of both along with the VQ hiss?? I find that hard to accept...

06-15-2019, 06:27 PM	#8 (permalink)
Mikriman Base Member Join Date: Mar 2018 Location: DFW Posts: 26 Drives: 2016 370Z Nismo 7AT Rep Power: 7	Thanks—that’s my next step after speaking with Z1 and ARK to get their thoughts....

06-15-2019, 06:53 PM	#9 (permalink)
fryzia23 Enthusiast Member Join Date: Dec 2010 Location: new jersey Posts: 452 Drives: 2011 MB 370Z NISMO Rep Power: 1245	I know its hard to believe but it was bothering me too and I also looked into the exhaust and found nothing. Eventually sold it and went with FI exhaust with their test pipes. Still has the VQ hiss but not as bad as ARK did.

06-19-2019, 08:23 PM	#11 (permalink)
Maestro666 Base Member Join Date: Oct 2018 Location: Australia Posts: 99 Drives: 370z 7AT 2014 Rep Power: 7	I have the Ark Grip cat back and the FI RHFC's installed and I get absolutely zero hiss (definitely no rattle). A little disappointed I don't get some badass hissing actually