Yukonboy03

So from what the dealer is telling me, this just makes the exhaust like the older models - where the valve changes only actuate based on engine speed.

Is this true?

If so, why wouldn't you just want the factory exhaust since you can change the sound by the mode selected (ie track, sport, etc)?

I'm guessing the only real benefit is the ~10 ponies from less backpressure or what?

Elleby13

You can only change the exhaust sound by way of the NPP the different driving mode sounds dont change when you have just the standard exhaust. I opted for the standard though because I knew I was going aftermarket anyways. The NPP is a great option though!

Yukonboy03

So when I listened to the tone change at the dealer, it had to have been a model with the optioned exhaust?

Jontall

Yes.

2 Ag R8Cs

When I got my new car I drove it almost 1,000 home with the first 75% of the trip in the healthy performance mode. On the last day the sound got a little tedious so I switched to quiet mode. One thing about the exhaust option that I love is the ability to quiet it down when the sound becomes tedious on a long ride.

Nyvetteguy007

I had NPP in my C6 and I added the fantastic Mild to Wild switch to make it even more fun...

When thinking about the C7 the ONLY must have in my mind was NPP....and now with Engine Sound Management it's customizable via the infotainment screen which makes it even better IMO...

So to each his own but I'm one of NPP's biggest fans

onyx_z71

I'm assuming NPP acts quite differently in a manual car than an automatic because of the AFM. I think the exhaust quiets down when the car goes into 4 banger mode and that is often on an automatic car in any drive mode and only in eco mode on a manual.

hope2

your dealer needs to go back to product knowledge school.

Kyflyer

An excellent programmable option that is well worth the money. It adds 5 hp and 5 ft lbs of torque for a reasonable price.

Cruiter

Your assumption is correct if you have the automatic, when it switch's to V4 mode, the exhaust note is muted. However I found a work around if you don't want it switching to V4. Just keep it in full manual where you have to use the paddle shift. It will remain in V8 and if you have sound management set to 'OFF', it will remain that way.

onyx_z71

That's something I'll have to try then. I've been poking around with the other features and modes so much that I really didn't think to try that. I only have about 350 miles on my car due to the Michigan weather.

c5eddiem

I just learned something!

I didn't realize that V4 mode would kick in in any selected mode. I thought it was only available when "the ****" was set to (E)conomy mode.

So I can drive in sport mode and it will still kick down to V4 if the computer tells it it is OK. Hmmmmm. (insert smilie with light bulb blinking over guy's head)

Ed

Greg00Coupe

In an auto not in a manual. Need to be in E mode in a standard to go to V4. Autos are always searching for V4 mode. Too much back and forth for me especially during engine break in.

Modshack

When the car switches to V4 mode the 2 valves BEFORE the muffler close (80% restriction from what I've read). These are on all cars.
NPP control is for the rear (post muffler valves). You can see from this Cutaway, that the exhause is routed straight through when the NPP valves (on the outer pipes) open. Green Tubing is perforated, Red is the packing material..

HDBADDOG55

Totally!!

redstar299

I bought my car from dealer stock and it had the exhaust but quite honestly...is it cool..yes. Is $1200 cool. No.