Can you upgrade to NPP on a C7 Base Stingray
05-06-2017, 03:30 PM
#1
Instructor
Thread Starter
Can you upgrade to NPP on a C7 Base Stingray
Looking to find out if you are able to upgrade to a NPP option outside of the factory. My main concern is that the engine sound management option would not be available in mylink.I wonder if its possible to install and just have a mild to wild exhaust. Given that 35k out of the 40k produced in 16 had NPP I cant find a lot of info on this and need some help. thank you in advance
05-06-2017, 04:47 PM
#2
You could install the NPP mufflers, but there's no way to control the valves. They'd be open (loud) all the time.
05-06-2017, 05:24 PM
#3
^^^Very accurate info. Most pull the fuse that controls exhaust valve that the sound management system adjusts and their car is loud all the time. So if you can get your hands on a good NPP axleback for a good price, it would be a worthy swap if you want it louder.
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Johnp94 (05-13-2017)
05-13-2017, 07:52 AM
#4
Which option will sound louder. Npp mufflers or no mufflers. ( for those that live in states without emission test ).
Last edited by Johnp94; 05-13-2017 at 07:53 AM.
05-13-2017, 09:21 AM
#5
Melting Slicks
Possible I think, but probably not cheap.
Akropovic makes a control module for $600 that interfaces with the car driving modes just like the regular npp. Then things get a little fuzzy. Akropovic also sells an actuator kit for $1100. It's possible to buy "complete" used C7 npp mufflers for $1000 ish. The question I have is do these come with the factory actuators or not, and do you need the Akropovic actuators for use with the Akropovic controller?
So, worst case, about $2600ish, but maybe $1600ish if the used mufflers come with actuators and you can skip the Akropovic actuators. (Which might simply be GM actuators)
Akropovic makes a control module for $600 that interfaces with the car driving modes just like the regular npp. Then things get a little fuzzy. Akropovic also sells an actuator kit for $1100. It's possible to buy "complete" used C7 npp mufflers for $1000 ish. The question I have is do these come with the factory actuators or not, and do you need the Akropovic actuators for use with the Akropovic controller?
So, worst case, about $2600ish, but maybe $1600ish if the used mufflers come with actuators and you can skip the Akropovic actuators. (Which might simply be GM actuators)
Last edited by DAFFYDRUNK; 05-13-2017 at 09:22 AM.
05-13-2017, 08:38 PM
#6
05-14-2017, 01:23 AM
#7
https://www.corvetteforum.com/forums/c7-tech-performance/3643906-npp-reverse-engineered-full-open-close-non-factory-npp-retrofit-9.html#post1594732329
Possible I think, but probably not cheap.
Akropovic makes a control module for $600 that interfaces with the car driving modes just like the regular npp. Then things get a little fuzzy. Akropovic also sells an actuator kit for $1100. It's possible to buy "complete" used C7 npp mufflers for $1000 ish. The question I have is do these come with the factory actuators or not, and do you need the Akropovic actuators for use with the Akropovic controller?
So, worst case, about $2600ish, but maybe $1600ish if the used mufflers come with actuators and you can skip the Akropovic actuators. (Which might simply be GM actuators)
Akropovic makes a control module for $600 that interfaces with the car driving modes just like the regular npp. Then things get a little fuzzy. Akropovic also sells an actuator kit for $1100. It's possible to buy "complete" used C7 npp mufflers for $1000 ish. The question I have is do these come with the factory actuators or not, and do you need the Akropovic actuators for use with the Akropovic controller?
So, worst case, about $2600ish, but maybe $1600ish if the used mufflers come with actuators and you can skip the Akropovic actuators. (Which might simply be GM actuators)
05-18-2017, 12:03 PM
#8
Drifting
Member Since: Aug 2009
Location: South Fla
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St. Jude Donor '10, '17-'18-'19
if you want NPP style control just go with the Armytrix system. It has a fob that controls mild or wild... not cheap but then again retro fitting NPP would not be either way.
05-18-2017, 07:23 PM
#9
Burning Brakes
05-18-2017, 08:57 PM
#10
05-19-2017, 02:01 PM
#11
Burning Brakes
05-19-2017, 08:56 PM
#12
05-19-2017, 09:18 PM
#13
Burning Brakes
05-19-2017, 09:39 PM
#15
Burning Brakes
