NPP Help!
Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
That smoke is usually more expensive than magic 
I would think the motors are pretty robust, seeing they are outside and have a 20 amp fuse running to each pair.
No 'description of operation' for the NPP or AFM valves in the service manual?
I would think the motors are pretty robust, seeing they are outside and have a 20 amp fuse running to each pair.
No 'description of operation' for the NPP or AFM valves in the service manual?
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
List is $380, Dealer is $280, Cost is... well... can't put that one here. You can find them for around $250 if you look hard enough.
Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
I'll probably wait for a take off NPP system to pop up..
Thread Starter
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
Thread Starter
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
Before throwing in the towel....you have a lot invested already try one of these....it should work.
http://www.amazon.com/KEEDOX®-6V-90V...pwm+controller
http://www.amazon.com/KEEDOX®-6V-90V...pwm+controller
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Drifting
Joined: Jun 2007
Posts: 1,425
Likes: 238
From: Macomb MI
Originally Posted by kp
Someone posted the muffler assemblies came with the actuators and I can get them for around 600 a side new, which isnt bad if they do come with the actuators.
I'll probably wait for a take off NPP system to pop up..
I'll probably wait for a take off NPP system to pop up..
I can confirm that. When the dealer replaced my NPP axle backs (tips misaligned from factory), both the AFM and NPP actuators (and the rear isolator) were installed out of the box.
Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
Thread Starter
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
Before throwing in the towel....you have a lot invested already try one of these....it should work.
http://www.amazon.com/KEEDOX®-6V-90V...pwm+controller
http://www.amazon.com/KEEDOX®-6V-90V...pwm+controller
Drifting
Joined: Jul 2007
Posts: 1,454
Likes: 4
From: Massapequa NY
1 should be fine,if it were me at that price I would get 2 just to make sure you have nothing funky going on with back feeding from one valve to another....remember you will also need a little project box to put the circuit board in as well!! You can find them anywhere including radio shack!.
I am going to assume you are ok with the wiring?? If not PM me after you get the module and I can probably put a wiring diagram together for you.I can get the original mild to wild wiring diagram as well.
Ron
Thread Starter
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
1 should be fine,if it were me at that price I would get 2 just to make sure you have nothing funky going on with back feeding from one valve to another....remember you will also need a little project box to put the circuit board in as well!! You can find them anywhere including radio shack!.
I am going to assume you are ok with the wiring?? If not PM me after you get the module and I can probably put a wiring diagram together for you.I can get the original mild to wild wiring diagram as well.
Ron
I am going to assume you are ok with the wiring?? If not PM me after you get the module and I can probably put a wiring diagram together for you.I can get the original mild to wild wiring diagram as well.
Ron
thanks I ordered 2! Get them the 19th! 
Last edited by 3 Z06ZR1; Jun 16, 2014 at 04:00 AM.
Burning Brakes
Joined: Sep 2011
Posts: 960
Likes: 40
Okay, I don't think that the ECM and the CCM are general purpose but configured for the car as built.
So I don't think that NPP can be connected to a C7 system that didn't come with NPP.
And so again, I've emailed BB for a custom exhaust that mounts the C6 NPP valves. Really, all I need is a C7 Fusion muffler that mounts the C6 NPP valves. And then those C6 NPP valves could be worked with either a vacuum switch or with a driver's switch.
This idea of C6 NPP muffler valves being different from C7 NPP muffler valves is something we had to debate about a little but there's the idea
.
So I don't think that NPP can be connected to a C7 system that didn't come with NPP.
And so again, I've emailed BB for a custom exhaust that mounts the C6 NPP valves. Really, all I need is a C7 Fusion muffler that mounts the C6 NPP valves. And then those C6 NPP valves could be worked with either a vacuum switch or with a driver's switch.
This idea of C6 NPP muffler valves being different from C7 NPP muffler valves is something we had to debate about a little but there's the idea
.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Sadly, they're a lot different in that the C6 had a much easier layout.
Drifting
Joined: Jul 2007
Posts: 1,454
Likes: 4
From: Massapequa NY
The PWM control may work, but I think its a stepper arrangement and if thats the case its not pwm but just a certain number of pulses to reach a desired position. Only thing about that is it would have to reverse polarity to the motor to go the other way, but it may just remove the ground to reset the motor and start over since its spring loaded.
Hard to tell without actually having an actuator though
Hard to tell without actually having an actuator though
This is straight out of Gm Techlink (all about C7) As I have said and the schematic indicates the signal from the CCM is PWM.....
An exhaust tailpipe flow control valve is installed in each tailpipe in the low restriction exhaust path of the dual outlet muffler, near the exhaust tip. (Fig. 6) When the tailpipe exhaust valves are open, the low restriction exhaust path is opened to the atmosphere and the exhaust note becomes more aggressive.
Fig 6
The Chassis Control Module uses pulse width modulation to control the actuator that opens the valves. To provide a more aggressive exhaust note when the vehicle is started, the valves are opened during engine cranking. There are four specific exhaust performance modes that result in different behavior of the valves:
• Weather/Eco Mode: valves closed at all times when the engine is running.
• Tour Mode: valves closed when the engine is idling and during normal/non-aggressive driving; open during aggressive driving.
• Sport Mode: valves open when the engine is idling and during most driving scenarios.
• Track Mode: valves are open at all times.
TIP: If engine sound enhancement is turned off in the Vehicle Settings menu, the valves will be put into track mode no matter which vehicle mode is displayed on the instrument panel.
Here is the link for your reading pleasure....
http://sandyblogs.com/techlink/?s=20...&search=Search