Question regarding NPP exhaust
Thread Starter
3rd Gear
Joined: Feb 2014
Posts: 3
Likes: 0
Question regarding NPP exhaust
Hello all,
Trying to find out if i was to install a NPP exhaust system on a 14 Z51 that was purchased without it, what is needed to be done so the exhaust can be controlled with the drive mode selector? Is there any wiring harness or would it just remain open all the time?
Thanks.
Trying to find out if i was to install a NPP exhaust system on a 14 Z51 that was purchased without it, what is needed to be done so the exhaust can be controlled with the drive mode selector? Is there any wiring harness or would it just remain open all the time?
Thanks.
Burning Brakes
Joined: Sep 2011
Posts: 960
Likes: 40
I would just concentrate on aftermarket exhausts.
The Billy Boat Fusion probably does work with both the OEM NPP and the AFM. The Bullet and PRT appear to only work with the AFM. But in either case, don't forget the X-pipe with high flow cats.
If the cylinder de-activation were taken off the car (and if the car doesn't have NPP) then the Flowmaster would seem to be the muffler for that since it doesn't have any muffler valves. (The inTune device might be able to permanently turn off the AFM.)
If the aftermarket muffler should be popping too much then I try a richer air/fuel ratio with something like the HKS AFR
.
The Billy Boat Fusion probably does work with both the OEM NPP and the AFM. The Bullet and PRT appear to only work with the AFM. But in either case, don't forget the X-pipe with high flow cats.
If the cylinder de-activation were taken off the car (and if the car doesn't have NPP) then the Flowmaster would seem to be the muffler for that since it doesn't have any muffler valves. (The inTune device might be able to permanently turn off the AFM.)
If the aftermarket muffler should be popping too much then I try a richer air/fuel ratio with something like the HKS AFR
.
Last edited by B Stead; Mar 10, 2014 at 05:03 PM.
Le Mans Master
Joined: Oct 2004
Posts: 8,615
Likes: 60
From: Haymarket Virginia
As of right now, there is no known way by the general public to add NPP to a car that does not have it and have the ability to switch it with the drive mode selector.
There are aftermarket exhaust vendors that offer a "NPP" type system but it does not integrate into the drive mode settings.
While nothing is impossible, I would say it's not easy and cost effective to intergrade it into a car that didn't come with it from the factory.
There are aftermarket exhaust vendors that offer a "NPP" type system but it does not integrate into the drive mode settings.
While nothing is impossible, I would say it's not easy and cost effective to intergrade it into a car that didn't come with it from the factory.
Instructor
Joined: Dec 2013
Posts: 101
Likes: 0
From: Austin TX
Hello all,
Trying to find out if i was to install a NPP exhaust system on a 14 Z51 that was purchased without it, what is needed to be done so the exhaust can be controlled with the drive mode selector? Is there any wiring harness or would it just remain open all the time?
Thanks.
Trying to find out if i was to install a NPP exhaust system on a 14 Z51 that was purchased without it, what is needed to be done so the exhaust can be controlled with the drive mode selector? Is there any wiring harness or would it just remain open all the time?
Thanks.
Pro
Joined: Jan 2013
Posts: 639
Likes: 17
From: DFW TX
It was reported by someone that the wiring for the NPP system is not present on non-NPP cars. You may want to verify this by checking your car to see if there are any plugs.
So in addition to the actuators you would need the wiring harness and to find where it terminates to run it down the tunnel of the car.
So in addition to the actuators you would need the wiring harness and to find where it terminates to run it down the tunnel of the car.
Race Director
Joined: Aug 1999
Posts: 13,280
Likes: 2,509
From: Bluffton SC via Canton Oh
Aftermarket exhausts are controlled by that switch under your right foot as it should be.
OP do you have an auto or manual? Might want to consider the difference in the way aftermarket systems work based on transmissions regarding the E mode. Automatics search for V4 mode all the time where as manuals go to V4 only if in E mode.
Might make a difference depending on the valving used by an aftermarket system. If you have a manual it's less of a factor.
OP do you have an auto or manual? Might want to consider the difference in the way aftermarket systems work based on transmissions regarding the E mode. Automatics search for V4 mode all the time where as manuals go to V4 only if in E mode.
Might make a difference depending on the valving used by an aftermarket system. If you have a manual it's less of a factor.
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
As of right now, there is no known way by the general public to add NPP to a car that does not have it and have the ability to switch it with the drive mode selector.
There are aftermarket exhaust vendors that offer a "NPP" type system but it does not integrate into the drive mode settings.
While nothing is impossible, I would say it's not easy and cost effective to intergrade it into a car that didn't come with it from the factory.
There are aftermarket exhaust vendors that offer a "NPP" type system but it does not integrate into the drive mode settings.
While nothing is impossible, I would say it's not easy and cost effective to intergrade it into a car that didn't come with it from the factory.
It was easy to add to my 2008. Just as easy on the C7. Just have to
turn it on so to speak! Someone knows how it works and what to do. Just need them to chime in!
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
It was reported by someone that the wiring for the NPP system is not present on non-NPP cars. You may want to verify this by checking your car to see if there are any plugs.
So in addition to the actuators you would need the wiring harness and to find where it terminates to run it down the tunnel of the car.
So in addition to the actuators you would need the wiring harness and to find where it terminates to run it down the tunnel of the car.
I'm going to try it for myself to add with my A&A kit!
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Burning Brakes
Joined: Sep 2011
Posts: 960
Likes: 40
The BB Fusion for the C7 appears to work with the OEM NPP system. Does it also have a kit to make an aftermarket NPP system ? I don't know and I would be careful who I asked because marketers are not very good at keeping track of complexities
.
.