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12-07-2020, 04:10 PM
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#1 |
 
Drives: 2022 ZL1(FEA suspension) Rapid Blue Join Date: Apr 2019
Location: Chemainus BC, Canada
Posts: 491
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NPP valves
Has anyone attempted to install the NPP on an aftermarket exhaust system? Curious to know whether it really makes any difference and where the valves were located.
I have an AWE system, and I reckon the valve could be quite easily cut it. But is it worth the effort? |
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12-07-2020, 04:27 PM
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#2 |
   
Drives: 2017 1SS 1LE Join Date: Jun 2016
Location: Detroit, MI
Posts: 1,000
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Depends on what the exhaust system setup is. It only is quieter on the OE system because it restricts flow on the outer tips which are nearly a passthrough and forces all exhaust flow through the body of the muffler. If the aftermarket system is cutting off a passthrough pipe and forcing the exhaust through a muffler it'll make a difference, but if it's just dual tips coming from one exhaust outlet (like the AWE system) it won't do anything significant.
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2017 SS 1LE.
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12-07-2020, 05:51 PM
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#3 |
       
Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016
Location: Georgia
Posts: 5,869
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Not worth the effort. Just buy an aftermarket system that has the provisions to mount the valves and drive on. You could probably sell the system on the ZLE to help pay for a new system. Good luck.
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ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.
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