Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Exhaust Pop/Backfire

Thread Tools
 
Search this Thread
 
Old Mar 11, 2008 | 08:40 PM
  #1  
Quickshift_C5's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
Default Exhaust Pop/Backfire

Ever since installing the B&B Bullet setup on my C5, I've had some pretty aggressive popping between shifts and it's just driving me insane. I'm 99% convinced I'm getting backfiring somehow.

Now, before everyone goes nuts and says exhaust popping and such is normal after installing this type of exhaust...that's not the same thing I'm talking about. A lot of cackling and burbling on deceleration is normal, I understand that.

What I'm getting is a pretty violent snap/pop when on the throttle hard and letting off quick or tapping it and letting off. Either combination really. Sometimes, it's extremely aggressive/loud...sounding exactly like a backfire.

I have not heard this in the tons and tons of videos I've seen online and I fear something is wrong. I'd like to hear what you guys think on this and what are the first things I can check. The few things I've researched so far that could cause something like this is faulty plugs/wires, etc. It did this when I got the exhaust, and it does it still after new plugs/wires I installed 2wks ago.

I made a video a while back on the exhaust, and you can "kind of" hear it when I rev it up high and get off the throttle quick. It's the quick SNAP you hear immediately as I lift the throttle. Keep in mind that this snap can often be about 5-10x as loud sometimes. It's pretty bad.

http://www.youtube.com/watch?v=gMIoB4LCNA8
Reply
Old Mar 11, 2008 | 09:45 PM
  #2  
CAMAROZ28AQUINO's Avatar
TECH Fanatic
 
Joined: Jul 2006
Posts: 1,179
Likes: 0
From: North Bay, Ontario
Default

u got any exhaust leaks of any nature? is youre system welded up? what header gaskets you using?
Reply
Old Mar 11, 2008 | 09:49 PM
  #3  
Quickshift_C5's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
Default

Only exhaust done on the car is just the B&B Bullet catback setup. There are no exhaust leaks. System is tack-welded where necessary.
Reply
Old Mar 12, 2008 | 05:34 AM
  #4  
DarkJuggalo's Avatar
TECH Fanatic
iTrader: (6)
 
Joined: Sep 2007
Posts: 1,275
Likes: 0
From: Charlotte, NC / Ansonia,CT
Default

try and get us a video =)
Reply
Old Mar 12, 2008 | 11:28 AM
  #5  
Jay z28's Avatar
On The Tree
iTrader: (5)
 
Joined: Oct 2007
Posts: 149
Likes: 0
From: Utah
Default

You running with a cat? That made a huge difference for me when I put mine back on.
Reply
Old Mar 12, 2008 | 12:04 PM
  #6  
DarkJuggalo's Avatar
TECH Fanatic
iTrader: (6)
 
Joined: Sep 2007
Posts: 1,275
Likes: 0
From: Charlotte, NC / Ansonia,CT
Default

sounds like your running a ORY with no cat, if thats the case i bet u put a cat on there it will make the pop stop or more mild =) i only heard it a couple times in the vid
Reply
Old Mar 12, 2008 | 12:09 PM
  #7  
my bandit's Avatar
TECH Addict
iTrader: (10)
 
Joined: Dec 2007
Posts: 2,052
Likes: 1
From: Jacksonville, Fl
Default

does it only do it when the car is cold or does it do it when its up to temp also?
Reply
Old Mar 12, 2008 | 05:02 PM
  #8  
Z28LS1camaroguy's Avatar
TECH Addict
iTrader: (3)
 
Joined: Apr 2005
Posts: 2,905
Likes: 0
From: Northern Kentucky
Default

mine pops, but i have a cutout and leaks all over the place in my Y pipe. Gonna fix that problem soon with true duals.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Mar 12, 2008 | 11:07 PM
  #9  
PSU 98's Avatar
TECH Regular
iTrader: (4)
 
Joined: Mar 2002
Posts: 414
Likes: 0
From: Schuylkill County PA
Default

Exhaust leak was my first thought also. If you find that your performance and gas mileage goes downhill, then that's the problem.
Reply
Old Mar 13, 2008 | 03:35 AM
  #10  
Quickshift_C5's Avatar
Thread Starter
Staging Lane
 
Joined: Oct 2006
Posts: 83
Likes: 0
From: Iowa
Default

As I said before, the exhaust on this car is factory besides the B&B Bullet setup. Also, once again there are NO leaks in the system. And uh...I DID post a video.

I found the answer in another forum since apparently nobody here can read, but thanks anyway guys!!
Reply




All times are GMT -5. The time now is 05:48 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE