2015 C7 Exhaust Question
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Joined: Sep 2020
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2015 C7 Exhaust Question
Good afternoon everyone,
So recently I managed to buy the catless Borla X-Pipe 60547. I have it installed along with a knock off range device, and the fuze pulled. Everything else is stock on the car.
While I definitely noticed a difference in sound at the 2000-3000 RPM range. I was wanting a bit more consistently aggressive tone from my exhaust. I have researched a handful of different options that may give me the results I am looking for.
If I was going to change anything it would just be the mufflers and tips. I'm honestly not ready to change the headers just yet.
Which leads me to my question. Between the various different muffler options or even a muffler delete I would consider. What may give me the biggest bang for my buck? All while trying to retain the NPP feature. If I needed to remove that it's okay, but I figure it's a nice feature to have when needed.
Thanks in advance
So recently I managed to buy the catless Borla X-Pipe 60547. I have it installed along with a knock off range device, and the fuze pulled. Everything else is stock on the car.
While I definitely noticed a difference in sound at the 2000-3000 RPM range. I was wanting a bit more consistently aggressive tone from my exhaust. I have researched a handful of different options that may give me the results I am looking for.
If I was going to change anything it would just be the mufflers and tips. I'm honestly not ready to change the headers just yet.
Which leads me to my question. Between the various different muffler options or even a muffler delete I would consider. What may give me the biggest bang for my buck? All while trying to retain the NPP feature. If I needed to remove that it's okay, but I figure it's a nice feature to have when needed.
Thanks in advance
Le Mans Master
Joined: Mar 2016
Posts: 9,174
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From: 2019 CMG Z06/ZR1
Be careful with a muffler delete. Noise is fun, but the drone will drive you insane. Also, if you want to hear as many options and combos of various exhaust systems as you can imagine, I'd recommend holding off on a decision and visiting Corvettes at Carlisle in late August.
Thread Starter
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Joined: Sep 2020
Posts: 64
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Be careful with a muffler delete. Noise is fun, but the drone will drive you insane. Also, if you want to hear as many options and combos of various exhaust systems as you can imagine, I'd recommend holding off on a decision and visiting Corvettes at Carlisle in late August.
Drifting
Joined: Aug 2005
Posts: 1,319
Likes: 822
From: Melbourne FL
Billy Boat Fusion mufflers will retain the NPP. I had their Route 66 exhaust on my C6 (non NPP) and loved it. Looked good and sounded deeper than stock. I haven't actually heard the Fusions on a C7, but they will be louder and retain the NPP to control drone.
Drifting
Joined: Jul 2018
Posts: 1,348
Likes: 463
Muffler delete will definitely drone.
Sound is so personal, some manufacturers keep NPP, some do not, and some offer both setups. Just depends on what your budget it and what sound your after. The Borla xpipe will pair up with the ATAK mufflers perfectly.
Sound is so personal, some manufacturers keep NPP, some do not, and some offer both setups. Just depends on what your budget it and what sound your after. The Borla xpipe will pair up with the ATAK mufflers perfectly.
Drifting
Joined: Dec 2019
Posts: 1,817
Likes: 616
From: Blacksburg Va
I would definitely keep NPP even if I installed aftermarket exhaust. I have a base car w/o NPP. I bought a pair of NPP mufflers and run them w/ the valves mechanically loked at about 1/2 open. Seems to be a good compromise but there are times I'd like to be able to close them w/ a switch. I am looking at building a controller but sure wish I had the OE system.
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I would definitely keep NPP even if I installed aftermarket exhaust. I have a base car w/o NPP. I bought a pair of NPP mufflers and run them w/ the valves mechanically loked at about 1/2 open. Seems to be a good compromise but there are times I'd like to be able to close them w/ a switch. I am looking at building a controller but sure wish I had the OE system.
So I'm glad you responded to my post. I've been playing around with a theory. From what little I understand there are two sets of valves correct? One set in the mufflers and the others a few steps up from the tips.
Pulling fuze 42 I believe keeps the ones near the tips open, but has no effect on the ones in the mufflers. That all being said since you Locked them at half open. If I say locked them at always open, what that be the closest to doing a muffler delete without. Actually deleting the mufflers?
I hope any of that made sense haha
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Thread Starter
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Joined: Sep 2020
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Oh no doubt, I think if I had to provide an example of a sound profile I am striving for. Would be a slightly lower growl to this video.
Any knowledge is always welcome, this is my first Corvette so I'm trying to learn all that I can.
Drifting
Joined: Jul 2018
Posts: 1,348
Likes: 463
Oh no doubt, I think if I had to provide an example of a sound profile I am striving for. Would be a slightly lower growl to this video. https://youtu.be/cM9J7_tE17k
Any knowledge is always welcome, this is my first Corvette so I'm trying to learn all that I can.
Any knowledge is always welcome, this is my first Corvette so I'm trying to learn all that I can.
That is a loud car, but also tame at times so I want to suspect it also maintained NPP functionality.
As for the valves, the NPP is right behind the tips before the muffler, I am unaware of any valves inside the muffler? but someone else might know more than me on that one.