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Non NPP Z06 to NPP

 
Old 02-10-2019, 09:15 AM
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Blk07Z06
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Default Non NPP Z06 to NPP

I have a 2007 Z06 that came with a magnaflow exhaust. I like the sound of it but on long trips it has a drone that gives me a headache. Does anyone know if I can put a 2008 factory NPP exhaust system in it and make it function properly? I was also looking at the billy boat fusion exhaust, but would prefer to put a stock system in due to it being quieter. Any help is appreciated. Thanks
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Old 02-10-2019, 10:08 AM
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I did exactly that on a 2006 z06. No issues.
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Old 02-10-2019, 10:11 AM
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Originally Posted by jwp2 View Post
I did exactly that on a 2006 z06. No issues.
Was that a factory NPP exhaust? What other parts did you need to make the NPP open without a switch?
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Old 02-10-2019, 11:08 AM
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Yes...factory. Just used the mild to wild remote switch.
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Old 02-10-2019, 11:47 AM
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Originally Posted by Blk07Z06 View Post
Was that a factory NPP exhaust? What other parts did you need to make the NPP open without a switch?
All you need is the vacuum line and a solenoid to make the stock NPP exhaust work as the actuators are part of the exhaust. The solenoid is located in the rear by tail lights, so there shouldn't be any reason for the original owner to remove it and it should still be there. The actual opening/closing is controlled by the ECU through the vaccum line and remain closed until the RPMs hit a certain number, around 3500 IIRC. If you want to manually control when the flaps are open/closed, you will need to get something like a Mild To Wild switch.

And just as a technical side note, NPP is the option code for this type of exhaust on a non Z06 Corvette. This exhaust was not an option for the Z06, it was standard. So calling it an NPP exhaust isn't technically correct, it is just called a bi-modal exhaust. But people still refer to it as an NPP exhaust.

I decided to go with the BB Fusions on my 2006 and have been extremely happy with them. In the closed mode, they are just as quiet as the stock exhaust with no drone. But I thought the stock exhaust was too tame in the open mode.
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Old 02-10-2019, 12:50 PM
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Zlatan Ibrahimović
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Originally Posted by Blk07Z06 View Post
I have a 2007 Z06 that came with a magnaflow exhaust. I like the sound of it but on long trips it has a drone that gives me a headache. Does anyone know if I can put a 2008 factory NPP exhaust system in it and make it function properly? I was also looking at the billy boat fusion exhaust, but would prefer to put a stock system in due to it being quieter. Any help is appreciated. Thanks
of coures you can put it
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Old 02-11-2019, 04:34 PM
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Originally Posted by dmuellenberg View Post
All you need is the vacuum line and a solenoid to make the stock NPP exhaust work as the actuators are part of the exhaust. The solenoid is located in the rear by tail lights, so there shouldn't be any reason for the original owner to remove it and it should still be there. The actual opening/closing is controlled by the ECU through the vaccum line and remain closed until the RPMs hit a certain number, around 3500 IIRC. If you want to manually control when the flaps are open/closed, you will need to get something like a Mild To Wild switch.

And just as a technical side note, NPP is the option code for this type of exhaust on a non Z06 Corvette. This exhaust was not an option for the Z06, it was standard. So calling it an NPP exhaust isn't technically correct, it is just called a bi-modal exhaust. But people still refer to it as an NPP exhaust.

I decided to go with the BB Fusions on my 2006 and have been extremely happy with them. In the closed mode, they are just as quiet as the stock exhaust with no drone. But I thought the stock exhaust was too tame in the open mode.
I was under the impression the NPP exhaust wasn't standard on a 2007 Z06. My window sticker has no mention of dual mode exhaust nor does my build sheet. Am I mistaken?
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Old 02-11-2019, 04:50 PM
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Originally Posted by Blk07Z06 View Post
I was under the impression the NPP exhaust wasn't standard on a 2007 Z06. My window sticker has no mention of dual mode exhaust nor does my build sheet. Am I mistaken?
Every year C6Z came with dual mode exhaust.
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Old 02-11-2019, 04:56 PM
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Originally Posted by MTPZ06 View Post
Every year C6Z came with dual mode exhaust.
Awesome thank you! I did not know that.
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Old 02-12-2019, 03:03 PM
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I was able to crawl up under the car yesterday and found my vacuum connections for the dual mode exhaust.
Thank you to all that replied, I appreciate all your help.
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