Exhaust Pop?

tlr3715 · 08-22-2013, 09:24 PM

I was driving aggressively this morning and I heard what I thought was a pop coming from the stock Nismo exhaust after letting off the throttle. I cannot be sure if it came from my car or if it was some other noise on the road. I didn't think the stock exhaust was aggressive enough to make popping or gurgling sounds. Does anyone else experience these sounds from the stock exhaust?

olddudesrule · 08-22-2013, 10:03 PM

The popping sound I think you're referring to is caused by unburned fuel getting past the combustion chamber and igniting inside the exhaust pipe. I got it a lot in my old Viper and Z06, both of which had aftermarket cams. Usually occurred while decelerating on a down shift. Never had it occur with my Nismo (stock).

nogoodname · 08-22-2013, 10:05 PM

It could be just back pressure related and I'm sure it's nothing to worry about. When I had a single 3" exhaust with oem cats, it amplified it. Whenever I went WOT then let off, there would be a lot of gurgling and popping noises.

P's_Z · 10-14-2013, 11:15 AM

Quote:

Originally Posted by nogoodname

It could be just back pressure related and I'm sure it's nothing to worry about. When I had a single 3" exhaust with oem cats, it amplified it. Whenever I went WOT then let off, there would be a lot of gurgling and popping noises.

One of the things i miss from my wrx

Rusty · 10-14-2013, 09:54 PM

You should hear mine on downshifts.

Catch a downshift at about 4 grand in any gear. As it unwinds, it gives to two pops as the rpm drops to about 3 grand.

With the FI LTH's, 12" resonators and FI cbe. It's music.

fuct · 08-23-2013, 09:19 AM

ive heard it once or twice on my car too. i think it sounds cool

Armhunter · 08-23-2013, 12:59 PM

Quote:

Originally Posted by fuct

ive heard it once or twice on my car too. i think it sounds cool

With my setup right now I hear it all the time.. and yes, it sounds like a race car!! Everyone comments how awesome it sounds.. I love it.

Cbtech · 08-23-2013, 01:07 PM

I took off the rear muffler and have that sound all the time with the gurgling sound. It makes panties drop

TreeSemdyZee · 08-23-2013, 02:25 PM

Watch any road-racing series (Grand Am, American Lemans, etc.) especially at night.
All cars do it. It's normal unless of course it becomes a monstrous boom.

NissanGuy23 · 08-24-2013, 07:43 PM

Quote:

Originally Posted by Armhunter

With my setup right now I hear it all the time.. and yes, it sounds like a race car!! Everyone comments how awesome it sounds.. I love it.

Same. Ive got aam catback and test pipes, snap crackle pop!

I just wonder if there is any visual fire or light out the back? Maybe ill have to have a friend follow me

NickTurnon · 08-23-2013, 02:34 PM

I pop all the time with stock cats and short tails! I love it! But i don't like too much of it.

tlr3715 · 08-23-2013, 09:21 PM

Yeah I know it's not a bad noise. I've heard it on my Z28 Camaro and Firebird Formula after letting off the throttle after hard acceleration. I was just surprised to hear it on the Nismo. Thought it would be too restrictive.

Very glad to hear the noise, have much more respect for the exhaust

L33T Z34 · 09-02-2013, 03:00 AM

Quote:

Originally Posted by tlr3715

I was driving aggressively this morning and I heard what I thought was a pop coming from the stock Nismo exhaust after letting off the throttle. I cannot be sure if it came from my car or if it was some other noise on the road. I didn't think the stock exhaust was aggressive enough to make popping or gurgling sounds. Does anyone else experience these sounds from the stock exhaust?

O! I feel so hi 'n mitey when my Xhaust pops and bak-fires! I feel like I can take on a whole fleet of LS3 Slomaros/Five pt slo Mustanks! LOL

!

luigi90210 · 10-05-2013, 01:00 PM

you tend not to hear it with the stock muffler but if you did aam short tails or something, you will hear the car pop like no tomorrow, completely normal

chii370 · 10-09-2013, 08:06 AM

My dts pops and snarls every single time i decel, like clock work. So now i find myself downshifting a lot for stop lights instead of just putting the clutch in JUST so i can hear it sound like a bad ***.

08-22-2013, 09:24 PM	#1 (permalink)
tlr3715 Base Member Join Date: Aug 2013 Location: NJ Posts: 35 Drives: 2013 370Z Nismo Rep Power: 12	Exhaust Pop? I was driving aggressively this morning and I heard what I thought was a pop coming from the stock Nismo exhaust after letting off the throttle. I cannot be sure if it came from my car or if it was some other noise on the road. I didn't think the stock exhaust was aggressive enough to make popping or gurgling sounds. Does anyone else experience these sounds from the stock exhaust?

10-14-2013, 09:54 PM	#5 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 69 Posts: 35,354 Drives: 2011 Nismo GM 6M Rep Power: 2684438	You should hear mine on downshifts. Catch a downshift at about 4 grand in any gear. As it unwinds, it gives to two pops as the rpm drops to about 3 grand. With the FI LTH's, 12" resonators and FI cbe. It's music. fuct likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

08-23-2013, 09:19 AM	#6 (permalink)
fuct A True Z Fanatic Join Date: May 2009 Location: Sugar Land Posts: 3,692 Drives: 97' Ranger :) Rep Power: 24	ive heard it once or twice on my car too. i think it sounds cool NissanGuy23, 1st and Jbwrecked like this.

08-23-2013, 01:07 PM	#8 (permalink)
Cbtech A True Z Fanatic Join Date: Feb 2013 Location: Sacramento, CA Posts: 1,372 Drives: 40th Anniversary Rep Power: 16	I took off the rear muffler and have that sound all the time with the gurgling sound. It makes panties drop Jbwrecked likes this. __________________ Are U in Sacramento or Central Valley California? Click here! Foglight Hardwire in less than 10 minutes! DIY: Automatic VDC off

08-23-2013, 02:34 PM	#11 (permalink)
NickTurnon A True Z Fanatic Join Date: Jul 2011 Location: Scottsdale Age: 34 Posts: 1,636 Drives: 09 BS 7AT 370z Rep Power: 18	I pop all the time with stock cats and short tails! I love it! But i don't like too much of it. __________________ 2009 Brilliant Silver BASE 7AT \| TEIN S-Tech Springs \| K&N Drop Ins & z1 Maf Tubes \| AAM S-Line Short Tails \| 5% Tint \| 20MM Spacers \| Sport Spoiler NickTurnon's 370z Build

08-22-2013, 10:03 PM	#2 (permalink)
olddudesrule Enthusiast Member Join Date: Apr 2013 Location: Gilbert, AZ Posts: 252 Drives: 2012 Nismo Rep Power: 12	The popping sound I think you're referring to is caused by unburned fuel getting past the combustion chamber and igniting inside the exhaust pipe. I got it a lot in my old Viper and Z06, both of which had aftermarket cams. Usually occurred while decelerating on a down shift. Never had it occur with my Nismo (stock).

08-22-2013, 10:05 PM	#3 (permalink)
nogoodname Lifetime Premium Join Date: Nov 2008 Location: Montreal Posts: 22,357 Drives: E46 M3 Rep Power: 1765	It could be just back pressure related and I'm sure it's nothing to worry about. When I had a single 3" exhaust with oem cats, it amplified it. Whenever I went WOT then let off, there would be a lot of gurgling and popping noises.

08-23-2013, 02:25 PM	#9 (permalink)
TreeSemdyZee Premium Member Join Date: Dec 2009 Location: Kentuck-IANA Age: 60 Posts: 4,886 Drives: '09 370 & ‘14 Juke Rep Power: 27409	Watch any road-racing series (Grand Am, American Lemans, etc.) especially at night. All cars do it. It's normal unless of course it becomes a monstrous boom.

08-23-2013, 09:21 PM	#12 (permalink)
tlr3715 Base Member Join Date: Aug 2013 Location: NJ Posts: 35 Drives: 2013 370Z Nismo Rep Power: 12	Yeah I know it's not a bad noise. I've heard it on my Z28 Camaro and Firebird Formula after letting off the throttle after hard acceleration. I was just surprised to hear it on the Nismo. Thought it would be too restrictive. Very glad to hear the noise, have much more respect for the exhaust

10-05-2013, 01:00 PM	#14 (permalink)
luigi90210 A True Z Fanatic Join Date: Apr 2012 Location: San Diego CA Posts: 1,103 Drives: Classified Rep Power: 15	you tend not to hear it with the stock muffler but if you did aam short tails or something, you will hear the car pop like no tomorrow, completely normal __________________ SOLD 370z New Car:classified DD:2011 Mini Cooper S stock

10-09-2013, 08:06 AM	#15 (permalink)
chii370 Track Member Join Date: Jul 2010 Location: . Posts: 642 Drives: . Rep Power: 16	My dts pops and snarls every single time i decel, like clock work. So now i find myself downshifting a lot for stop lights instead of just putting the clutch in JUST so i can hear it sound like a bad ***.

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