C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Performance exhaust always on!

Thread Tools
 
Search this Thread
 
Old Jun 12, 2018 | 11:32 PM
  #1  
MsEllie's Avatar
MsEllie
Thread Starter
Instructor
 
Joined: Apr 2018
Posts: 213
Likes: 43
Default Performance exhaust always on!

Well, I guess my atomic orange roadster, Ms. Ellie, likes to hear herself. I have two fobs to turn it quiet, but no cigar! Any suggestions?

Last edited by MsEllie; Jun 12, 2018 at 11:33 PM.
Reply
Old Jun 13, 2018 | 11:28 AM
  #2  
RicK T's Avatar
RicK T
Team Owner
10 Year Member
 
Joined: Sep 2005
Posts: 20,352
Likes: 568
From: Ventura County, Calif
Default

Well, is the car new to you? FOB batteries good? Do the FOB buttons light up when pushed? Did you check the fuse panel under the passenger floor panel to see if the controller is there and hooked up properly?

Could be a bad controller, they do go bad occasionally. Or a wiring / ground attachment problem, pretty common. Maybe post a couple pics of what you have, FOBs and controller installed.
Reply
Old Jun 13, 2018 | 03:37 PM
  #3  
2008 Corvette's Avatar
2008 Corvette
Melting Slicks
Veteran: Navy
 
Joined: Oct 2015
Posts: 3,299
Likes: 769
From: Mead Wash
2020 C6 of the Year Finalist - Modified
C6 of Year Finalist (appearance mods) 2019
Default Npp

FYI. Fob battery Duracell 27.
Reply
Old Jun 13, 2018 | 04:30 PM
  #4  
realcanuk's Avatar
realcanuk
Le Mans Master
15 Year Member
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Apr 2011
Posts: 7,821
Likes: 412
From: Montreal
St. Jude Donor '13
Default

What system is it ?
Reply
Old Jun 13, 2018 | 06:40 PM
  #5  
twinarrow99's Avatar
twinarrow99
Racer
10 Year Member
All Eyes On Me
Photogenic
Liked
 
Joined: Sep 2012
Posts: 418
Likes: 13
From: San Antonio Texas
Default

agree with comments above. check your fuse panel behind passenger footwell. IF you have mild to wild, you should see a blade plugged into where the exhaust fuse normally lives - and extends to a small module with ground wire and short antenna. This of course, if you have the factory NPP dual mode exhaust. simple thing to do if this is the case is to replace the mild to wild blade plugged into the fuse block with a 10a fuse. if dual mode is STILL all open, you likely have a bad solenoid - located behind the RR taillight. somewhat a bear to get to, but simple to replace. otherwise you might have NPP vacuum line issues... happened to me a few years back, the solenoid was visibly cooked. I recall Dano saying the NPP was designed bass ackwards - the solenoid is engaged and overworked excessively.

Last edited by twinarrow99; Jun 13, 2018 at 06:43 PM.
Reply
Old Jun 14, 2018 | 01:09 AM
  #6  
MsEllie's Avatar
MsEllie
Thread Starter
Instructor
 
Joined: Apr 2018
Posts: 213
Likes: 43
Default

Originally Posted by RicK T
Well, is the car new to you? FOB batteries good? Do the FOB buttons light up when pushed? Did you check the fuse panel under the passenger floor panel to see if the controller is there and hooked up properly?

Could be a bad controller, they do go bad occasionally. Or a wiring / ground attachment problem, pretty common. Maybe post a couple pics of what you have, FOBs and controller installed.
Fob light lights up on both fobs. It worked last fall when I put it to bed. This is the factory dual mode exhaust.
Reply
Old Jun 14, 2018 | 01:09 AM
  #7  
MsEllie's Avatar
MsEllie
Thread Starter
Instructor
 
Joined: Apr 2018
Posts: 213
Likes: 43
Default

Originally Posted by realcanuk
What system is it ?
Good old GM.
Reply
Old Jun 14, 2018 | 01:12 AM
  #8  
MsEllie's Avatar
MsEllie
Thread Starter
Instructor
 
Joined: Apr 2018
Posts: 213
Likes: 43
Default

Originally Posted by twinarrow99
agree with comments above. check your fuse panel behind passenger footwell. IF you have mild to wild, you should see a blade plugged into where the exhaust fuse normally lives - and extends to a small module with ground wire and short antenna. This of course, if you have the factory NPP dual mode exhaust. simple thing to do if this is the case is to replace the mild to wild blade plugged into the fuse block with a 10a fuse. if dual mode is STILL all open, you likely have a bad solenoid - located behind the RR taillight. somewhat a bear to get to, but simple to replace. otherwise you might have NPP vacuum line issues... happened to me a few years back, the solenoid was visibly cooked. I recall Dano saying the NPP was designed bass ackwards - the solenoid is engaged and overworked excessively.
Good post. Lots of stuff to work with now. Just what I wanted and needed. Thank you.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Jun 14, 2018 | 10:28 AM
  #9  
jrose7004's Avatar
jrose7004
Team Owner
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2004
Posts: 58,501
Likes: 1,828
From: Oklahoma City OK
C6 of Year Finalist (appearance mods) 2019
Default

I just leave mine open all the time by choice.
Reply
Old Jun 15, 2018 | 12:28 AM
  #10  
MsEllie's Avatar
MsEllie
Thread Starter
Instructor
 
Joined: Apr 2018
Posts: 213
Likes: 43
Default

Originally Posted by jrose7004
I just leave mine open all the time by choice.
It drones like a b#tch when the top is up, but when down, I don't mind that sweet sound at all. So, ya, I hear you on that one.
Reply
Old Jun 16, 2018 | 01:03 PM
  #11  
Got uid0's Avatar
Got uid0
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2002
Posts: 8,466
Likes: 51
St. Jude Donor '17
Default

Originally Posted by MsEllie
It drones like a b#tch when the top is up, but when down, I don't mind that sweet sound at all. So, ya, I hear you on that one.
exhaust fuse ok?
Reply
Old Jun 19, 2018 | 04:57 PM
  #12  
dr_gallup's Avatar
dr_gallup
Safety Car
Photoriffic
Loved
Community Favorite
Top Answer: 5
 
Joined: Feb 2016
Posts: 4,452
Likes: 1,386
From: SC
Default

It's vacuum operated so the vacuum line can be bad too.
Reply

Get notified of new replies

To Performance exhaust always on!





All times are GMT -4. The time now is 08:41 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE