LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Fly by wire :Ls4 with Headers chim in PLEASE

Thread Tools
 
Search this Thread
 
Old 08-05-2010, 02:47 PM
  #1  
TECH Fanatic
Thread Starter
iTrader: (23)
 
1CL3ANSUP3RSPORT's Avatar
 
Join Date: Nov 2009
Location: Inland Empire
Posts: 1,349
Received 4 Likes on 3 Posts

Question Fly by wire :Ls4 with Headers chim in PLEASE

Questions for those with headers,under light to heavy loads under acceleration has anyone experience vibration on the pedal or noise comin from the CV's...I've had this problem for about 3months and it seems to be getting worse...

Now my question is since the headers and exhaust have been open up more allowing more air to free flow would this affect the fly by wire?Change of idle maybe???Or could my tranny or torque converter be the main problem,taking a dump on me...

Thoughts???Before I take her in to the dealership...
Old 08-05-2010, 03:34 PM
  #2  
TECH Junkie
iTrader: (1)
 
Mels SS's Avatar
 
Join Date: Jun 2007
Location: New Orleans La
Posts: 3,159
Likes: 0
Received 0 Likes on 0 Posts
Default

Mine seems to be fine no vibration.
Tires, and or bent half shaft could also cause the viberation
Old 08-05-2010, 03:44 PM
  #3  
TECH Addict
iTrader: (5)
 
AlabamaGuy's Avatar
 
Join Date: Jun 2009
Posts: 2,802
Likes: 0
Received 0 Likes on 0 Posts
Default

I get some pedal vibration from time to time. I attributed it to tires or suspension more than headers. But if you have really loud exhaust it might just be the right resonance and you're feeling it. Like how my headliner and center console rattle at part throttle... :/
Old 08-05-2010, 03:48 PM
  #4  
TECH Enthusiast
 
SSCoop's Avatar
 
Join Date: Jan 2010
Location: Sicklerville, NJ
Posts: 646
Likes: 0
Received 0 Likes on 0 Posts
Default

i dont have any headers but my exhaust causes the whole inside to rattle especially the middle console and the window pillars
Old 08-05-2010, 06:04 PM
  #5  
TECH Fanatic
Thread Starter
iTrader: (23)
 
1CL3ANSUP3RSPORT's Avatar
 
Join Date: Nov 2009
Location: Inland Empire
Posts: 1,349
Received 4 Likes on 3 Posts

Default

Originally Posted by Mels SS
Mine seems to be fine no vibration.
Tires, and or bent half shaft could also cause the viberation
Tires still got good tread,gonna be gettin sum new ones this wknd...Half shaft could be a problem from all the burn outs I do...

Originally Posted by AlabamaGuy
I get some pedal vibration from time to time. I attributed it to tires or suspension more than headers. But if you have really loud exhaust it might just be the right resonance and you're feeling it. Like how my headliner and center console rattle at part throttle... :/
That's how mine started,from time to time but got worse as time went on...In park I can rev the sh*t out of her and no noise or vibration on the pedal,in drive is when I feel it and hear it...Exhaust is pretty tame,except under heavy acceleration she growls and no vibrations inside the cabin area from the exhaust.

That's why I ask if it had anything to do with the Fly by wire,change of idle maybe???

Originally Posted by SSCoop
i dont have any headers but my exhaust causes the whole inside to rattle especially the middle console and the window pillars
Sh*t with straight pipe I believe that **** rattles everything loose,LMAO
Old 08-05-2010, 06:09 PM
  #6  
TECH Fanatic
Thread Starter
iTrader: (23)
 
1CL3ANSUP3RSPORT's Avatar
 
Join Date: Nov 2009
Location: Inland Empire
Posts: 1,349
Received 4 Likes on 3 Posts

Default

Forgot to mention happens when turning as well...
Old 08-05-2010, 08:25 PM
  #7  
TECH Junkie
iTrader: (1)
 
Mels SS's Avatar
 
Join Date: Jun 2007
Location: New Orleans La
Posts: 3,159
Likes: 0
Received 0 Likes on 0 Posts
Default

The dog bone can cause the vibrations if you have aftermarket one that's real tight.
Old 08-05-2010, 08:29 PM
  #8  
TECH Addict
iTrader: (5)
 
AlabamaGuy's Avatar
 
Join Date: Jun 2009
Posts: 2,802
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Mels SS
The dog bone can cause the vibrations if you have aftermarket one that's real tight.
I'd forgotten about that. It's actually what I attribute most of my NVH to. the short, billet DB and poly bushings.
Old 08-05-2010, 10:13 PM
  #9  
TECH Fanatic
iTrader: (4)
 
monte_with_a_LS4's Avatar
 
Join Date: Mar 2010
Location: Springfield, IL
Posts: 1,124
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by AlabamaGuy
I get some pedal vibration from time to time. I attributed it to tires or suspension more than headers. But if you have really loud exhaust it might just be the right resonance and you're feeling it. Like how my headliner and center console rattle at part throttle... :/
i dont have my headers on yet... but man does my center console rattle
Old 08-05-2010, 11:31 PM
  #10  
TECH Fanatic
Thread Starter
iTrader: (23)
 
1CL3ANSUP3RSPORT's Avatar
 
Join Date: Nov 2009
Location: Inland Empire
Posts: 1,349
Received 4 Likes on 3 Posts

Default

Shorter DB not on yet,and poly bushing has been on for a while and never did it before...
Old 08-06-2010, 12:54 AM
  #11  
TECH Fanatic
iTrader: (5)
 
williamGT's Avatar
 
Join Date: Jul 2008
Location: Yellowknife NT Canada
Posts: 1,467
Likes: 0
Received 0 Likes on 0 Posts

Default

Mine does it, ever since GM replaced my steering rack, It happened's when costing/slowing down RPM's around 900....Goes into GM next week for the 3rd time for this.




All times are GMT -5. The time now is 04:08 PM.