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Discussion Starter · #1 ·
It will be interesting to see what the price for this system will be and if there will be any HP gains above the available optional performance exhaust? You have to wonder if they will have done their homework on the sound quality while the car cruises in the e-con V-4 mode? I checked their site and could not find any new info.
 

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It will be interesting. I have put Borla on some of my cars in the past, but doubt there is any differential hp between the NPP and the new Borla with everything else being the same. It is very hard to distinguish any difference in their short sound bite from the way RedHot sounds with the NPP set to open (the way I always have it "automatic off"). Now if you went on to add their headers, modified cats, pipes etc. I would anticipate a hp difference from OEM. Would it be something I would want- nope. So much effort and research has been put into the C7 NPP system to ensure phenomenal sound across all driving ranges- from the start up, to the incredible sounds while enthusiastically running up through the gears, to the great pops and burbles when you let off the power, I wouldn't change a thing. :cool:
 

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Discussion Starter · #3 ·
Jeff; I believe the sound you hear is the GM exhaust. Notice the microphones in the video and the round exhaust tips. The Borla system will have differently shaped tips. If they can bring them to market with a HP gain, the same or better sound and a lower price point than the $1195 that GM wants for their performance exhaust they may well have a winner.
 

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Jeff; I believe the sound you hear is the GM exhaust. Notice the microphones in the video and the round exhaust tips. The Borla system will have differently shaped tips. If they can bring them to market with a HP gain, the same or better sound and a lower price point than the $1195 that GM wants for their performance exhaust they may well have a winner.
If that is the case it explains why the clip sounds very similar to RedHot. However I think the clip is intended to represent the Borla system which early in the video has very similar tips to those on the NPP. :cool:
 

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Discussion Starter · #5 ·
This shows the Borla on the C-7, but has no sound. It appears that the exhaust tips are part of their rear diffuser, which I am not a big fan of. I do like the shape of the tips though.
 

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I saw that at SEMA and think it is an earlier prototype. They do have some similar stuff in the clip you posted as well. Will just have to wait and see but I will stick to my earlier comments in my post #2 here.:)
 

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I'm curious if people without the npp exhaust, will be able to add borla's npp exhaust as if it belongs there.
Are the hookups for the muffler valves still there without the option being bought from Chevy? Will it automatically adjust itself then with mode dial?

Sent from my Nexus 5 using Corvette Stingray Forum mobile app
 

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Virtually nothing on cars is plug and play, even if the wiring is present it will most likely require a flash upgrade from a dealer. Borla needs to research this and provide explicit directions, if it's possible to enable NPP after the fact.

If it's not then I'm seriously wondering wheat they were thinking. The market for a pipe swap with a car that already has NPP has to be minuscule.
 

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Discussion Starter · #9 ·
New Borla exhaust system ready to go.

I have seen that the Borla C-7 ready, plug and play exhaust system is about ready to be available to be shipped. It is a bit more expensive than the stock NPP system, but the below quote seems pretty interesting.
Bora C-7 EXHAUST.jpg Borla C-7 exhaust rear.jpg

When asked about how the Borla system compares with the NPP Davis Borla had this response.
“Both our ATAK and S-Type systems for the NPP cars are louder than stock in the "sport", or loud, setting. They also have distinctly different exhaust notes. So, not only are they louder from purely a decibel level perspective but they are also different in tone from the stock system (they are also different in tone from one another). For the "touring", or quiet, setting we kept it pretty close to stock in decibel level but again the notes are different from stock. You can add one of our 3 X-pipes for the C7 to make these systems even louder if you desire.
Regarding power, we're making about 10-12 additional horsepower over stock across the entire RPM range. A larger diameter will get you more power at wide open throttle but you lose power everywhere else. Since we spend most of our time driving at RPMs other than wide open throttle we try to make the most power across the entire RPM range because that's where you actually use it. Be wary of peak HP numbers. You can count on 10-12 HP from us in the RPMs you actually drive at.”
 

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Chip, thanks for that find. Borla is listing their StingRay exhaust system at $3,286 and will sell them at $2,994. Do not see the two trapezoidal tips listed, and wonder if they would be a substitute for the four round ones, or a "$ add on?"
 

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So if your getting approximately 10 HP more with this Borla exhaust.Does that mean if I install headers with this exhaust I could pick up 25-35 more HP?
 

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So if your getting approximately 10 HP more with this Borla exhaust.Does that mean if I install headers with this exhaust I could pick up 25-35 more HP?
Good question and the answer is, "maybe yes, and maybe no." Aftermarket power increases are not directly additive.

As an example, say "Mod A" will get you five HP, and, "Mod B" will get you five HP, but when you add/install the two together, most of the time you will not get 10 HP, i.e., you may get 9HP, but you may get as little as five or six HP.
 

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Good question and the answer is, "maybe yes, and maybe no." Aftermarket power increases are not directly additive.

As an example, say "Mod A" will get you five HP, and, "Mod B" will get you five HP, but when you add/install the two together, most of the time you will not get 10 HP, i.e., you may get 9HP, but you may get as little as five or six HP.
Totally spot on. Personally, when one considers making any changes, regardless of the cost, you have to ask yourself the question; "Is it really worth it?" Personally, can we really feel an extra 5-10 horsepower in the seat of our pants and how much is it worth? Is 5-10 horsepower worth $100.00 or $1,000.00 or $2,000.00? Actually, + - 5-10 horsepower falls under a margin of error on most dyno's.... Don't mean to be a party pooper here, but unless your into it for the sound, then...........
 
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