Magnaflow 19171 on NPP C7
02-20-2018, 05:19 PM
#1
Advanced
Thread Starter
Magnaflow 19171 on NPP C7
Hey everyone! I've done a ton of searching, but can't find anything specific to this issue.
I purchased a Magnaflow 19171 Competition Series exhaust from a member on the forum, took it to an exhaust shop and they said that they wouldn't be able to install it due to AFM valves likely throwing a code.
I could have sworn that members on the forum have installed this exhaust and zip tied the actuators out of the way, but I wasn't able to get this across to the installer.
Called Magnaflow and they told me that 19171 will NOT work on the NPP Stingray, contrary to what I've read (or thought I've read) on the forum.
Can anyone confirm/deny? Obviously the Magnaflow would know best, as it's their product but wanted to check here before I listed the exhaust for sale.
Thanks!
I purchased a Magnaflow 19171 Competition Series exhaust from a member on the forum, took it to an exhaust shop and they said that they wouldn't be able to install it due to AFM valves likely throwing a code.
I could have sworn that members on the forum have installed this exhaust and zip tied the actuators out of the way, but I wasn't able to get this across to the installer.
Called Magnaflow and they told me that 19171 will NOT work on the NPP Stingray, contrary to what I've read (or thought I've read) on the forum.
Can anyone confirm/deny? Obviously the Magnaflow would know best, as it's their product but wanted to check here before I listed the exhaust for sale.
Thanks!
Last edited by BronxBomber; 02-20-2018 at 05:20 PM.
02-20-2018, 06:41 PM
#2
Advanced
Thread Starter
Hey everyone! I've done a ton of searching, but can't find anything specific to this issue.
I purchased a Magnaflow 19171 Competition Series exhaust from a member on the forum, took it to an exhaust shop and they said that they wouldn't be able to install it due to AFM valves likely throwing a code.
I could have sworn that members on the forum have installed this exhaust and zip tied the actuators out of the way, but I wasn't able to get this across to the installer.
Called Magnaflow and they told me that 19171 will NOT work on the NPP Stingray, contrary to what I've read (or thought I've read) on the forum.
Can anyone confirm/deny? Obviously the Magnaflow would know best, as it's their product but wanted to check here before I listed the exhaust for sale.
Thanks!
I purchased a Magnaflow 19171 Competition Series exhaust from a member on the forum, took it to an exhaust shop and they said that they wouldn't be able to install it due to AFM valves likely throwing a code.
I could have sworn that members on the forum have installed this exhaust and zip tied the actuators out of the way, but I wasn't able to get this across to the installer.
Called Magnaflow and they told me that 19171 will NOT work on the NPP Stingray, contrary to what I've read (or thought I've read) on the forum.
Can anyone confirm/deny? Obviously the Magnaflow would know best, as it's their product but wanted to check here before I listed the exhaust for sale.
Thanks!
Called Mike over at Billy Boat (great guy) since I have a PRT exhaust hopefully on the way (long story with a no longer supported forum vendor) and he explained that the primary valves are the ones that will throw a code if they aren't hooked up, secondary valves are the ones that can be moved out of the way.
Looking at the Billy Boat exhaust systems vs the Competition Magnaflow exhausts, Billy Boat's has a much longer pipe that connects further towards the front of the car (assuming at or in front of the rear axle). Magnaflow's hooks up at or behind the wheel, therefore don't reach the AFM/primary valves.
Please feel free to hop in if any of my understanding is incorrect!
So as a result, Magnaflow 19171 for sale!
Last edited by BronxBomber; 02-20-2018 at 06:42 PM.
02-21-2018, 01:11 PM
#3
Pro
The afm valves are the first ones closest yo the engine you can remove the actuators from the valve but leave them plugged in and zip tie them out of the way as long as the actuators are plugged in you wont get the sel I have the zo6 como exhaust from magnaflow but mine does have the valves for the npp If yours dorsnt jhave those you can remove rhe actuators you wont get a cel you will just not have that function
it sounds awesome but it is loud i have it in stealth mode and its loud maybe cause I have headers and no cats but I love it
it sounds awesome but it is loud i have it in stealth mode and its loud maybe cause I have headers and no cats but I love it
02-21-2018, 10:31 PM
#4
Le Mans Master
Perhaps the previous owner had a Z06, which does not have the AFM valves. As such no codes. As an example, I replaced my Z06 NPP with Corsas, which disables the NPP actuators. I zip tied the harnesses to the frame. You can still install the Corsas on AFM valve equipped C7s, but you have to retrofit (cut and clamp) the AFM valves to it... Not sure if this can be done with MagnaFlow. Here’s a vid of the retrofitting process (starts at 4:28):
Last edited by sTz; 02-21-2018 at 10:32 PM.
02-22-2018, 09:32 AM
#5
Pro
Mine is a 15 base stingray. If you leave the modules plugged in even tho they are not mointrf on the afm valves the computer wont know the diference because the actuator is working. The ecu only monitors the actuator not the valves thenselves they are in there only to remove the nasty drone when the cars are in 4 cyl mode