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Old Oct 23, 2013 | 05:08 PM
  #1  
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Default NPP Issue

When I ordered the optional exhaust, I expected a mild to wild option menu.

There's not much difference at all when I change from mode to mode.

I ordered the 2LT M7 without the Z 51 package.

I have gone through the infotainment menu and switched the exhaust driving mode to "off", and this did not make a difference.

Hardly noticeable when it goes from eco-to sport.

Has anyone else had this issue?
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Old Oct 23, 2013 | 05:19 PM
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Yours may be not working. I have a Z-51 with the NPP and there is a major difference between touring and sport/track modes.

Mine barks, backs off and sounds nasty when open. I would make sure your electric NPP exhaust is working.
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Old Oct 23, 2013 | 05:32 PM
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You can tell if there working just by looking at the baffles in the rear. The two outer ones should open when in sport/track. The difference is definitely noticeable.
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Old Oct 23, 2013 | 06:37 PM
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You should definitely notice a different sound.
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Old Oct 23, 2013 | 06:55 PM
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Check the fuse.
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Old Oct 23, 2013 | 06:55 PM
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With the car on, be in sport/track mode and look at the exhaust tips. Is the baffle open or closed?

Here is a video of someone switching between the modes. You can tell the difference.

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Old Oct 23, 2013 | 07:07 PM
  #7  
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You sure it came with the NPP ?
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Old Oct 23, 2013 | 07:12 PM
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Originally Posted by Homer3D
With the car on, be in sport/track mode and look at the exhaust tips. Is the baffle open or closed?

Here is a video of someone switching between the modes. You can tell the difference.

Would have been exceptionally nice and well received if that Damn Cam in the back ground wasnt getting us excited.....crap
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Old Oct 23, 2013 | 07:17 PM
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can you guys us the stick or pencil method to keep the butterfly from closing.
On a BMW a BB would work in the vac line
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Old Oct 23, 2013 | 08:25 PM
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Originally Posted by DocHolliday
You should definitely notice a different sound.
the difference is dramatic.
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Old Oct 23, 2013 | 08:50 PM
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There's a slight difference. I guess I just thought it would be more dramatic. Definitely has NPP. I pulled both the left and right fuse, and that didn't make it louder either. I remember when I pulled the fuse on the Hertz rental Corvette convertible in 2010 and that was pretty raucous. Loved pulling up behind a slower car and dropping down 2 gears. The sound alone would have them scurrying out of the way!

Moral...Don't buy a rental!
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