NPP idea

[SS_Dave]

Been thinking about getting a little louder with the exhaust. But, I also have zero desire for drone. Current setup is long tubes, high flow cats and stock mufflers on an LS3. It's fine, but i'd like it a bit louder and aggressive as it's rather mild till you really hammer it. So...

Thinking of swapping to NPP mufflers, but I'd need to do two things. Wire up switching and cut the quads and route through one tip. Reason is I have the GFX kit and I don't want to lose it.

So two questions: ANyone have an example where they've done this? And can you point me to decent switching mechanism to run the valves?

[SS_Dave]

I did find this and am reading it now. May answer my q's. We'll see. Still curious about anyone who's done it keeping a GFX kit.

https://www.camaro5.com/forums/showthread.php?t=599161

[FasNuf]

Originally Posted by SS_Dave

Been thinking about getting a little louder with the exhaust. But, I also have zero desire for drone. Current setup is long tubes, high flow cats and stock mufflers on an LS3. It's fine, but i'd like it a bit louder and aggressive as it's rather mild till you really hammer it. So...

Thinking of swapping to NPP mufflers, but I'd need to do two things. Wire up switching and cut the quads and route through one tip. Reason is I have the GFX kit and I don't want to lose it.

So two questions: ANyone have an example where they've done this? And can you point me to decent switching mechanism to run the valves?

Why not just eliminate the cats? I have NPP with headers and no cats and rarely open them. The mufflers keep the drone down and the cat removal made it louder. Open pipe from the NPP is a little raspy in my opinion..

[1JEWLDSSRS]

Originally Posted by FasNuf

Why not just eliminate the cats? I have NPP with headers and no cats and rarely open them. The mufflers keep the drone down and the cat removal made it louder. Open pipe from the NPP is a little raspy in my opinion..

If you don't have emissions testing, as mentioned, take out the cats. Even though they are "hi-flow", they do take away some good sound volume.

[PhantomBlack]

Originally Posted by SS_Dave

I did find this and am reading it now. May answer my q's. We'll see. Still curious about anyone who's done it keeping a GFX kit.

https://www.camaro5.com/forums/showthread.php?t=599161

I did that write up and it's still working flawlessly. Lmk if you have any questions and I can try and help you out!