Tune out decel pop - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

NEstyle · 10-21-2018, 06:24 PM

To each his own, I guess. I think the crackle and popping sounds like ass, and I love a good sounding, loud exhaust.

myold88 · 10-21-2018, 07:56 PM

Quote:

Originally Posted by NEstyle

To each his own, I guess. I think the crackle and popping sounds like ass, and I love a good sounding, loud exhaust.

That's it- Cackle & Popping every time I start up my SS. Love it.

Taylortoons · 10-21-2018, 09:50 PM

I make my exhaust pop every available opportunity. Between shifts, slowing down, down shifting. You name it I pop it. Don’t believe anyone is going to mistake my car for a piece of sh!t. If your car does, you need more hp!

Every car in my stable is internally combusted and forced air inducted by turbos or superchargers. God bless America!!

CamaroFred · 10-21-2018, 11:05 PM

Quote:

Originally Posted by Norm Peterson

Yeah, a reminder of just how poor overall carburetor behavior with big cams really was.

Imitating that now is not flattery, it's the result of seeing the past through rose-tinted glasses.

Norm

I thought it was for fuel savings and better engine braking.
Like when you hear the big rigs using their Jake Brake. I have to admit that can be annoying, but there is a purpose to it.

christianchevell · 10-22-2018, 07:02 AM

Wake up its called exhaust BURBLE for a lot of it...

Exhaust Burble on Acceleration

Some cars' exhaust systems will produce an odd burble or bubbling noise. For the most part this is deliberate when it occurs in vehicles upon acceleration, but not always. Many "street racers" and similar cars have undergone a few modifications to give them better fuel efficiency at higher RPMs. In order for this to occur, the lifters and timing mechanism for the sequence of combustion in the engine's cylinders is altered. This means that, while the engine timing will work well at much higher RPM, the combustion process at lower speeds is slightly off. The burble is in actual fact a series of lean misfirings caused by this timing which rumble out through the exhaust system. It causes no serious damage to the engine, and soon disappears once the vehicle has reached high speeds.

Exhaust Burble on Deceleration

An exhaust burble, or throaty popping noise which could be likened to a babbling brook, is has a different cause if it only occurs when suddenly backing off on a vehicle's throttle. Essentially, the sudden easing off the throttle causes an immediate decrease in exhaust emissions to the degree that atmospheric pressure surrounding the exhaust pipe pushes cool air up into the exhaust system. This air collides with the warm exhaust gasses and creates a rumbling not unlike thunder. Normally this will only happen if the tailpipe has too wide a diameter to maintain equalized air pressure, or there is a seam in the exhaust pipes which is not air tight.

Repairs

Some people like having the throaty noise of an exhaust burble; some do not. For those who do not want this sound, there are ways of fixing it. For an exhaust burble on acceleration, the engine must undergo a professional tune-up including resetting the timing mechanism and lifters; keep in mind this will decrease high speed engine performance, but increase the quality of performance at low speeds. For exhaust burbles upon deceleration, the seams of the exhaust pipe must be sealed against unwanted air entry, or the pipe must be swapped out for one of a smaller diameter to maintain equalized pressure between exhaust and the surrounding atmosphere.

Now that's basically a non problem for most a nice burble is race car and you cant deal with out it in real racecars or spend stupid time dealing with trying to eliminate it... such as here a article by thunder max....

http://www.thunder-max.com/techdocs/DecelPop1.pdf

Unspent fuel from the cut off meets with air coming in....ignites in headers etc...solution for some....be stupid valve the exhaust or decrease size of exhaust pipe..or alter tune of vehicle to make it less rich and no good fuel cut off wasting fuel at cut off and....decreasing power at WOT by limiting fuel flowing..... so perfectly cutting off the decel popping it can be done …. and its with remapping of the AFR with a good dyno tune many may do it just to try to quiet it down...… then again fighting against something people spend money doing increasing the performance of the engine and the sound of the exhaust makes it more rare.... and frankly not so much into hurting the exhaust valves they are just getting dirtier anyway..... and go to any good track and hear the Corvettes or European Exotics race the track and you hear Burble and Decel Popping...even little ricers on the street trying to dump extra fuel to make it pop.... and they drool over my exhaust....with their FART trumpets magnifying their little sounds to the max to make it louder on purpose...

And you want to make it louder heres a article on it.....From a SRT 8 owner who wishes he had it...…..

https://forum.hptuners.com/showthrea...pping-on-decel

Norm Peterson · 10-22-2018, 07:40 AM

Diesel/Jake brake noise is a different phenomenon, intentionally generated by a very different method from any cause of spark-ignition popping. It's misleading to assume that the reason for using a Jake brake also applies to spark-ignition engines simply because noise is made in both situations.

Norm

J Rod · 10-22-2018, 07:48 AM

Quote:

Originally Posted by Norm Peterson

Diesel/Jake brake noise is a different phenomenon, intentionally generated by a very different method from any cause of spark-ignition popping. It's misleading to assume that the reason for using a Jake brake also applies to spark-ignition engines simply because noise is made in both situations.

Norm

I think you're more of a Cliff Claven than a Norm Peterson.

Norm Peterson · 10-22-2018, 08:13 AM

Quote:

Originally Posted by Moto-Mojo

Why stop there? Is not the whole car a mere imitation of something that went before?

Popping that can't be avoided is one thing, and making it happen where it otherwise wouldn't is right up there with those sound tubes that some car makers have been using.

Norm

ZED SLED · 10-22-2018, 09:08 AM

Quote:

Originally Posted by J Rod

I think you're more of a Cliff Claven than a Norm Peterson.

StingrayblueSS · 10-22-2018, 12:18 PM

https://insideevs.com/app-tesla-mode...ke-muscle-car/ you can make your Tesla sound like anything you want.

3rdGenAg2010 · 10-22-2018, 06:55 PM

Quote:

Originally Posted by Norm Peterson

Popping that can't be avoided is one thing, and making it happen where it otherwise wouldn't is right up there with those sound tubes that some car makers have been using.

Norm

Ignorant question, but what specifically makes it popping sound. I assumed its incomplete combustion occurring past the exhaust valves

I personally like it alot.

theragtopguy · 10-22-2018, 07:10 PM

Personally, I love it!! The NPP exhaust is music to my ears, either accelerating or decelerating!!!

OHIOSS · 10-22-2018, 08:01 PM

Quote:

Originally Posted by NEstyle

To each his own, I guess. I think the crackle and popping sounds like ass, and I love a good sounding, loud exhaust.

Sounds like ass.....meaning like giant car farts?

InFiD3ViL · 10-22-2018, 10:11 PM

Lots of opinions in here...

It's starting to get that stink!

10-21-2018, 09:50 PM	#17
Taylortoons Drives: 2011 2SS/RS LS3 Join Date: Apr 2017 Location: Dallas Posts: 482	I make my exhaust pop every available opportunity. Between shifts, slowing down, down shifting. You name it I pop it. Don’t believe anyone is going to mistake my car for a piece of sh!t. If your car does, you need more hp! Every car in my stable is internally combusted and forced air inducted by turbos or superchargers. God bless America!! __________________ GPI Built Procharger D-1/13 PSI/Race Intercooler/SS3 Cam Kit/Kooks LTH/X- pipe/FIC 1050/E85/3.91 gears/Centerforce Dual Disc clutch/Flowmaster Outlaw/775whp/680tqSOLD

10-22-2018, 07:02 AM	#19
christianchevell old school chevy rodder Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012 Location: Oregon Posts: 5,587 View My Garage	Wake up its called exhaust BURBLE for a lot of it... Exhaust Burble on Acceleration Some cars' exhaust systems will produce an odd burble or bubbling noise. For the most part this is deliberate when it occurs in vehicles upon acceleration, but not always. Many "street racers" and similar cars have undergone a few modifications to give them better fuel efficiency at higher RPMs. In order for this to occur, the lifters and timing mechanism for the sequence of combustion in the engine's cylinders is altered. This means that, while the engine timing will work well at much higher RPM, the combustion process at lower speeds is slightly off. The burble is in actual fact a series of lean misfirings caused by this timing which rumble out through the exhaust system. It causes no serious damage to the engine, and soon disappears once the vehicle has reached high speeds. Exhaust Burble on Deceleration An exhaust burble, or throaty popping noise which could be likened to a babbling brook, is has a different cause if it only occurs when suddenly backing off on a vehicle's throttle. Essentially, the sudden easing off the throttle causes an immediate decrease in exhaust emissions to the degree that atmospheric pressure surrounding the exhaust pipe pushes cool air up into the exhaust system. This air collides with the warm exhaust gasses and creates a rumbling not unlike thunder. Normally this will only happen if the tailpipe has too wide a diameter to maintain equalized air pressure, or there is a seam in the exhaust pipes which is not air tight. Repairs Some people like having the throaty noise of an exhaust burble; some do not. For those who do not want this sound, there are ways of fixing it. For an exhaust burble on acceleration, the engine must undergo a professional tune-up including resetting the timing mechanism and lifters; keep in mind this will decrease high speed engine performance, but increase the quality of performance at low speeds. For exhaust burbles upon deceleration, the seams of the exhaust pipe must be sealed against unwanted air entry, or the pipe must be swapped out for one of a smaller diameter to maintain equalized pressure between exhaust and the surrounding atmosphere. Now that's basically a non problem for most a nice burble is race car and you cant deal with out it in real racecars or spend stupid time dealing with trying to eliminate it... such as here a article by thunder max.... http://www.thunder-max.com/techdocs/DecelPop1.pdf Unspent fuel from the cut off meets with air coming in....ignites in headers etc...solution for some....be stupid valve the exhaust or decrease size of exhaust pipe..or alter tune of vehicle to make it less rich and no good fuel cut off wasting fuel at cut off and....decreasing power at WOT by limiting fuel flowing..... so perfectly cutting off the decel popping it can be done …. and its with remapping of the AFR with a good dyno tune many may do it just to try to quiet it down...… then again fighting against something people spend money doing increasing the performance of the engine and the sound of the exhaust makes it more rare.... and frankly not so much into hurting the exhaust valves they are just getting dirtier anyway..... and go to any good track and hear the Corvettes or European Exotics race the track and you hear Burble and Decel Popping...even little ricers on the street trying to dump extra fuel to make it pop.... and they drool over my exhaust....with their FART trumpets magnifying their little sounds to the max to make it louder on purpose... And you want to make it louder heres a article on it.....From a SRT 8 owner who wishes he had it...….. https://forum.hptuners.com/showthrea...pping-on-decel __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop

10-22-2018, 07:40 AM	#20
Norm Peterson corner barstool sitter Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012 Location: Eastern Time Zone Posts: 6,990	Diesel/Jake brake noise is a different phenomenon, intentionally generated by a very different method from any cause of spark-ignition popping. It's misleading to assume that the reason for using a Jake brake also applies to spark-ignition engines simply because noise is made in both situations. Norm __________________ '08 GT coupe 5M (the occasional track toy) '19 WRX 6M (the family sedan . . . seriously)

10-22-2018, 07:10 PM	#26
theragtopguy Lifetime Philly Fan Drives: 2015 Spring Edition 2SS M-6 Join Date: Mar 2012 Location: South Central Florida Posts: 1,862 View My Garage	Personally, I love it!! The NPP exhaust is music to my ears, either accelerating or decelerating!!! __________________ 2015 Green Flash, Delivered 4/10/15 CAI, NPP Exhaust, Short-throw shifter BBK LT HEADERS 1 7/8” Tune by DynoSteve via SCTx4 Tuner One of 82 GF Ragtops built in '15 out of 811 Total [/SIZE]

10-22-2018, 10:11 PM	#28
InFiD3ViL Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016 Location: Spring Hill, FL Posts: 4,570	Lots of opinions in here... It's starting to get that stink! __________________ 2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4, 7º overlap) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP 1-7/8" long tube headers (W/Catless Off-road Pipes), Corsa Xtreme 3" Catback, GPI Ported/Rod Mod Intake, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), MRR M017 10/11" wheels-Tuned by Ryan @ GPI

10-21-2018, 06:24 PM	#15
NEstyle Drives: Caprice Join Date: Nov 2016 Location: SE PA Posts: 194	To each his own, I guess. I think the crackle and popping sounds like ass, and I love a good sounding, loud exhaust.

10-22-2018, 12:18 PM	#24
StingrayblueSS Drives: 2013 Camaro SS Join Date: Feb 2017 Location: Indiana Posts: 901	https://insideevs.com/app-tesla-mode...ke-muscle-car/ you can make your Tesla sound like anything you want.