falcon5619

If the car meets all your other requirements I would not pass on it just because of lack of NPP. I would just go with an aftermarket exhaust. The aftermarket leverages their muffler design vs. closing valves to eliminate drone. I added a Billy Boat PRT axle back exhaust to my base Stingray and it sounds great. It is louder than the NPP when you get on it but has zero drone when cruising. No fuses, no valves, no settings, etc. Just get in and drive, press the gas hear it roar, cruise and it is quiet as NPP with valves closed.

You may actually prefer to select your own exhaust. The exhaust tone is slightly different from all the manufactures. The NPP tends to sound raspy, Billy Boat and Borla sound more old school muscle car with a deeper note and Corsa tends to sound more exotic at the high rpm range. If you do some searching you will see a lot of enthusiasts replace their NPP for something louder and with a different tone that they prefer. I wouldn't let lack of NPP be the deal breaker if you love the car otherwise.

aj98

Sconn

'17 GS here. . Honestly, the exhaust is one area I'm a bit disappointed with on the C7. It's way too tame. I drive it in the loudest setting all the time and beyond start up and maybe Wot, it's so quiet, you can't even hear it. I never even mess with the settings because I can't imagine wanting to "quiet it down". It's already quiet!

So, on its' way now is a Borla x pipe and Magnaflow competition exhaust! Bye bye quiet V8!

If that's your only hang up... I say try to drive cars with and without npp and see what you think. And as to your "great deal" .. It's not bad, but I nearly bought a 2015, Z51 3lt with pdr, npp, z06 grill and spoiler ​​​​​​etc for $45 with 12k miles via private party. It may still be for sale if you're interested. He was located in Nevada. Only selling cause he wanted to upgrade to a Z.
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falcon5619

So, even when the NPP exhaust set to Track mode the exhaust valves still close at lower rpm, like ~2000 rpm and below. With the A8, it is always trying to be efficient so it is always running at low rpm (NPP valves closed and AFM valves closed if in V4 mode) unless you are on it or in manual mode holding a gear and paddle shifting. With the M7, you can wind out the gears and hold them longer, which allows you to let the exhaust sing. If you want a bit more exhaust volume at low rpm you need to pull the NPP fuse then.

Sconn

Ya, I wanted to go a little further than that. That's why I'm going aftermarket

And doesn't that defeat the entire purpose of the NPP in the first place? Which is what the OP is asking about. If people are pulling the fuse to get a louder sound, they're also disabling it. Why do that when I can keep the npp with my aftermarket exhaust?

younglifecrisis

Thanks for all the replies. This is really hard to choose because I've been in need of a car so my patience is growing thin. I guess I just gotta decide what it's worth to me.

What was the color combo? That does sound like an amazing deal.

joemessman

The valves close (at least part way), in certain gears at speed below about 36-37 mph. Federal Motor Vehicle standards require a drive-by sound test to be conducted at speeds up to 35 mph. Remove the fuse and they stay open at all times.

Sconn

https://www.corvetteforum.com/forums/c7-corvettes-for-sale/4151285-2015-coupe-z51-3lz-black-on-black-a8.html

Sorry, was a little off on the mileage... Looks like it had 14k. Again, I have no idea if it's still for sale, but I will say, Ben was super nice and went out of his way to get detailed shots of the car for me. In the end, I went with a GS. Absolutely nothing wrong with the car or I'd never have mentioned it.

65fastback

Ive owned my NON npp base stingray for 7 months and put 6500 miles on it so far. its great but.....

I regret not buying a z51 or GS BIGTIME ! ! ! !

My advise is dont settle ( i did and it sucks ) keep doing what you doing... you already know you dont want a one trick pony loud exhaust 100% on all the time, the npp is perfect in my opinion.

Asking questions is great but mostly you need to get some seat time behind both cars.

JerryU

Avanti

No, buy the car if you otherwise like it. You can always play with the exhaust and boy-racer noises later.

BlackHoleGravity

I bought a CPO C7 without NPP, but it did come with a muffler delete!! Thought it would be too loud and drone, but once I drove it I loved the snap, crackle and pop!! It's not too loud, sounds just about right to me...

falcon5619

I was going to suggest the muffler delete as well, especially once you see the Corvette tax on a pair of mufflers but it sounded like the OP wanted the option to tone down the exhaust with the valves.

justplainjim

z51 package is not a big deal, especially if you're not tracking. Try to negotiate a slightly better selling price then replace the existing exhaust with an aftermarket set up.

younglifecrisis

Thanks for the advice everyone. So I realized that if I want NPP in the used market, I'm going to have to get the Z51 because it's going to be hard to find one with NPP and not Z51. The part that concerns me about the Z51 is it may not be the ride quality im looking for in a daily driver. I'm going to have to go check out both at the dealer and see if they'll let me test drive non-z51 and z51. Other than that, I think I lost out on the deal I was looking at cause I waited too long..

Sconn

There are plenty of deals out there... Keep looking. You'll find the right one.

younglifecrisis

Hope so. Been looking since July, and I don't have a car right now haha. I'm only really willing to look within an 800 mile radius because I'd rather not have to drive that far. This would be much faster if I wasnt look for white with red interior only in 3lt.

ExRedRacer

sTz

younglifecrisis

Opinion is pretty split it seems. I have a different question now, is it worth getting a car from a dealer? Seems like the prices are always a good amount extra than private.