[Memphis SS]

As other have posted.. NPP is well worth the money.

• Better sound
• Multi modes you can customize
• Gloss finish valance
• Quad tip exhaust
• You will spend more money on a good aftermarket then the option from Chevy for the NPP

[vtirocz]

The NPP is nice, but I'd prefer a passive exhaust that sounds really good all the time, such as the optional factory SLP dual dual exhaust on my 4th gen. If it's tuned really well, there's no need for the added complexity and weight of the NPP system.

If I had to do it again, I'd have a closer look at the base exhaust. There's really no power difference between the two systems, so it's only sound that you're paying for (which is important too!).

[Johnwon]

When i bought my 2SS I would not buy one that didn't have it and am glad that I stood firm. I normally run the exhaust with the valves open, however, there are times where I don't want to wake the neighbors and their kids and it allows me to quiet the car down as well. They make dual mode aftermarket exhausts, but I didn't feel like having something that wasn't integrated into the car.

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[Skwibbs]

Originally Posted by Johnwon

When i bought my 2SS I would not buy one that didn't have it and am glad that I stood firm. I normally run the exhaust with the valves open, however, there are times where I don't want to wake the neighbors and their kids and it allows me to quiet the car down as well. They make dual mode aftermarket exhausts, but I didn't feel like having something that wasn't integrated into the car.

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+1

I also wouldn't even consider an SS without NPP. When I was in the market, I ignored all cars without it when I was searching. While I can really see the uses for stealth mode, I'm an ass and don't have any kids or anything so I took the fuse out.

[Kuro]

Originally Posted by CamaroBody

I had difficulty finding dual mode exhaust and a sunroof in Hyper Blue

but eventually it showed up

.

That's kinda funny to me since when i was looking, all i could find with 2SS with all the options i wanted, included the sunroof. Didn't even really want that lol.

The dual mode is great, but i keep in in track 99.9% of the time. If you don't care about ever being quiet for that .1%, getting a stock exhaust and picking a borla or whatever, might be better. I do like having the option to be quieter even if i never use it.

[Marty McFlew]

Originally, I did not want the DM exhaust because I was going to swap out my exhaust anyway. Just so happens my car came with it. Now I'm glad I have it and have no desire to change it out. I didn't like the stock exhaust because I thought and still do think the sound sucks when just sitting in one place revving the engine making noise, but under load going down the road and stepping into it they sound pretty damn good, even in tour mode.
So... Revving=sux
Under load=Sounds damn good.

[Marty McFlew]

Originally Posted by CreativeDawn

Everybody has an opinion....RIGHT? I've heard the F-TYPE in person and yes from the factory stock its a tad bit louder then even the NPP but it doesn't take much to surpass the DB's of the F-TYPE with just a few simple mods (without getting a completly new system).

As far as the crackles and the pops go the F-TYPE was tuned for this! I think (for those who love the crackles and pops like me) we can have our Camaro's tuned to produce far more crackles and pops too.

I forgot how it's done exactly, but here's a video on an older tuned V6 Camaro with a lot of pops. I'm sure this video doesn't do it justice at all, but here's just an insight.

--

Now if you want to get a customized titanium muffler setup, you might get a similar outcome like this V6 Jaguar F-TYPE that has some out of control popping. It's actually pretty funny how many people you're prob annoying lol.

Both of these sounds suck.

[SS Life]

It's a must have imo if you want a nice sounding exhaust from the factory. And to also have an option between making it loud/quiet is awesome. You can even unplug the fuse that controls the dual exhaust, allowing the valves to be open 24/7 no matter what, making it even more louder. Check out the video below on how to do that.

[Rockmonstir]

Dual mode was a must for me, get up and go to the gym at 3am so having the stealth mode option is much appreciated by the neighbors.

[Memphis SS]

Originally Posted by SS Life

It's a must have imo if you want a nice sounding exhaust from the factory. And to also have an option between making it loud/quiet is awesome. You can even unplug the fuse that controls the dual exhaust, allowing the valves to be open 24/7 no matter what, making it even more louder. Check out the video below on how to do that.

Have I missed something here? When you put the car in track mode the valves stay open all the time, why do you need to pull the fuse?

[SSSHYBOY]

For $68-$90 DON"T pull fuse 51... I have posted on other threads... " Mild2wild"... Comes with two very small remotes... OPEN or CLOSED... Just push the button... Simple relay at fuse 51. I LOVE it as I do the NPP.....

BEST OF ALL; you don't need the remotes : You can program two of the three garage door buttons for OPEN and CLOSE... If I didn't make myself clear, I LOVE IT.

[01pewterz28]

I had to have it on mine or I would have waited

[Glen e]

Originally Posted by Memphis SS

Have I missed something here? When you put the car in track mode the valves stay open all the time, why do you need to pull the fuse?

Even in track mode, the valves close at interstate speeds..... and other times between 1100-1500 rpm.

[Memphis SS]

Originally Posted by Glen e

Even in track mode, the valves close at interstate speeds..... and other times between 1100-1500 rpm.

Interesting.. I keep the exhaust in track mode from the center display settings and I never had mine close back up that I noticed. I've even been on trips with the wife and she ask if I would put it in stealth mode to quite the car down.. Thanks for the comments Glen I will have to give this more testing in a few weeks when I drive to Bowling Green for the car show.
The manual info below...
The manual reads like they stay open in track mode but adjust in Sport and Touring.

Track Mode

If the vehicle is
equipped with Active Exhaust, the
exhaust valves will open.

Sport Mode

Exhaust, the
exhaust valves will open earlier and
more often.