Exhaust Bubble from High Rpms - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Chevy Cobalt Owners Lounge General Chevy Cobalt discussion

Closed Thread
 
LinkBack Thread Tools Display Modes
post #1 of 22 (permalink) Old 08-21-2010, 07:12 AM Thread Starter
Forum Regular
 
MMcGee91's Avatar
 
Join Date: Jun 2009
Location: Pasadena, CA
Posts: 127
Garage
Exhaust Bubble from High Rpms

Hey guys! Sorry if this topic has been brought up before, I'm on my phone, and I had a quick question. My Cobalt's exhaust bubbles from a high rpm, and I know Srt-4s do this alot as well. I was wondering what causes this, I think it sounds really cool. Thanks!
MMcGee91 is offline  
Sponsored Links
Advertisement
 
post #2 of 22 (permalink) Old 08-21-2010, 08:07 AM
Contributor
 
stripes's Avatar
 
Join Date: Apr 2010
Posts: 319
Quote:
Originally Posted by MMcGee91 View Post
Hey guys! Sorry if this topic has been brought up before, I'm on my phone, and I had a quick question. My Cobalt's exhaust bubbles from a high rpm, and I know Srt-4s do this alot as well. I was wondering what causes this, I think it sounds really cool. Thanks!
mine dose it to but only after i put a cold air intake on it. idk why though. wish i could help


Nitrous is like a hot girl with an STD, you always want to hit it but are afraid of the consequences.
I purposely down shift when i pass a prius so they can hear me hurting the environment.
stripes is offline  
post #3 of 22 (permalink) Old 08-21-2010, 08:50 AM
Cobalt Specialist
 
BlueFlash's Avatar
 
Join Date: Mar 2010
Location: Ohio
Posts: 1,056
Garage
describe what you are talking about, do you mean the popping noise your exhaust makes when you are coasting?


2006 Laser Blue LS - Wrecked
BlueFlash is offline  
post #4 of 22 (permalink) Old 08-21-2010, 08:58 AM
Contributor
 
stripes's Avatar
 
Join Date: Apr 2010
Posts: 319
mine is when your rev it up or what we call winding it out which is shifting between 5000-6300 rpm

---------- Post added at 08:58 AM ---------- Previous post was at 08:58 AM ----------

it kinda sounds like there's water bubbling in it.


Nitrous is like a hot girl with an STD, you always want to hit it but are afraid of the consequences.
I purposely down shift when i pass a prius so they can hear me hurting the environment.
stripes is offline  
post #5 of 22 (permalink) Old 08-21-2010, 03:28 PM
Staff Alumni


 
Join Date: Feb 2010
Location: Ontario, Canada
Posts: 1,338
Garage
isnt that unburnt gas popping in the hot manifold?

StevoElsupremo is offline  
post #6 of 22 (permalink) Old 08-21-2010, 04:38 PM
YourCobalt of the Month WinnerForum Regular
 
TogDyslexia's Avatar
 
Join Date: Jun 2009
Location: Edmonton, Alberta
Posts: 83
Garage
mine does the same. Only started after the CAI and GMPP upgrade. I was told its safe, the car is just burning rich

TogDyslexia is offline  
post #7 of 22 (permalink) Old 08-22-2010, 07:12 AM
Cobalt Specialist
 
BlueFlash's Avatar
 
Join Date: Mar 2010
Location: Ohio
Posts: 1,056
Garage
i had the same with my intake and my tsudo, it pops and garbles in between shifts, i think it sounds great, but ive never heard its bad for the car


2006 Laser Blue LS - Wrecked
BlueFlash is offline  
post #8 of 22 (permalink) Old 08-22-2010, 09:29 AM
Veteran
 
rayray's Avatar
 
Join Date: Mar 2009
Location: Mayville WI
Posts: 567
Garage
Its not bad, i herd its just burning off fuel (running a tad rich at that point) but someone correct me if im wrong....i know SRT4's are notorious for doing this and its 10 times louder.



Mods:
Aeroforce Interceptor gauge, Eibach Sportlines, De-badged, 140 mph White Face Gauge Cluster, Silver Star Ultra Headlights, Injen CAI, CF Dash Trim, 5 Spoke Rims, Eibach 25mm Rear Sway bar, SS Upper Grille, Painted Black Bowtie, DC Sports Carbon Strut Bar, Injen Hydro-shield, Emergency Brake Boot, Blue Powdercoated Valve Cover, Black Dash & Center Council, Tsudo Catback, ZZP Downpipe.
rayray is offline  
post #9 of 22 (permalink) Old 08-22-2010, 10:19 AM
YourCobalt of the Month WinnerCobalt Master


 
ff_drift_lol's Avatar
 
Join Date: Nov 2009
Location: lawn guyland
Posts: 1,890
valve overlap and afterburn. wasted fuel combusting in the exhaust.

ff_drift_lol is offline  
post #10 of 22 (permalink) Old 08-22-2010, 10:28 AM
Forum Regular


 
uZi5's Avatar
 
Join Date: Sep 2009
Location: Wallingford, CT
Posts: 232
Garage
Quote:
Originally Posted by ff_drift_lol View Post
valve overlap and afterburn. wasted fuel combusting in the exhaust.
that doesnt sound like it would be good for the exhaust...
uZi5 is offline  
Sponsored Links
Advertisement
 
Closed Thread

Tags
exhaust bubble

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome