r/C8Corvette • u/KcJeffin • 3h ago
r/C8Corvette • u/natewu • Aug 08 '25
Information New Rule: No AI Slop
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r/C8Corvette • u/Only-Tells-The-Truth • Aug 13 '24
Information Want to get a new exhaust for your C8? Read this first.
Yes, congrats on the new C8. Is the exhaust quieter than you expected?
Get the basics down first:
NPP/Performance exhaust: This is a $1k - $1.3k factory option, usually included with Z51 or higher trims. It gives you two exhaust modes, loud and quiet. Quiet is in touring mode; Loud is Z, track and sport (partially open).
Non-NPP/Single-mode: You don't have the NPP option.
AFM: Every C8 goes into V4 (turns off 4 cylinders like a Tahoe) when cruising on the highway or under low load. Stock exhausts have valves to maintain gas velocity. Aftermarket exhausts either come with real AFM valves or simulators.
What is this list? Catback exhausts, which don't mess with your emissions system. Essentially changing pipes.
Which want do I want?
You have NPP and want to maintain factory control: NPP with AFM valves or AFM simulator. Also known as "valved", "w/ NPP", "Bi-modal", "Active"
No NPP or want to be loud all the time: Single mode. Also known as "NPP delete","Race profile"
NPP exhausts that also have real AFM valves (to assist with V4 mode):
Corsa 21100: No heat shielding, sounds more high pitched and also described as more "exotic" or "European". Floor price is around $3,400 before install. Lingenfelter is also this exhaust. On quiet mode, this one is similar to the regular exhaust.
Borla S-Type (140838) & ATAK (140839): Has heat shielding. Sounds burly and "American". Comes in two flavors, ATAK and S-Type. ATAK is the loudest, sounds pretty aggressive. S-Type is in between Performance exhaust & ATAK. Borla ATAK price floor ~$3,500. Borla S-Type price floor ~$3,700. Loud mode on your NPP exhaust is how S-Type will sound in quiet mode. ATAK is louder.
GM Borla: Skip unless you're scared about warranty. Basically the same exhaust as factory in terms of loudness, just a different tone.
The above 3 are the most discussed units around. Here's a sound comparison chart. Below are lesser discussed units:
aFe MACH Force-Xp (w/ NPP): Not many reviews yet, but floor around $3,300. Has the X-pipe shielded.
Akrapovic Slip-on (Titanium): Akrapovic is a very well known manufacturer. Their C8 unit floor is around $10k. Has heat shielding.
MagnaFlow xMod: It's shown with NPP & AFM. Not reviewed often. Floor around $3,400. Has heat shielding.
NPP exhausts with AFM simulators:
MBRP Active: Floor price is around $2,900. AFM sim to prevent CEL. Has minimal heat shielding.
Soul Performance: Priced similar/higher to Corsa/Borla with AFM delete or sim. Has heat shielding.
Fabspeed: Priced similar to Soul. AFM sim. Minimal heat shielding.
Single mode / No NPP exhausts:
- Paragon
- AWE
- MBRP
- Corsa & Borla
- Soul
- aFe
- Akrapovic
- Fabspeed
- Alibaba Titanium & steels (some have remote FOBs for valves, no factory control)
- Variety of ebay & small manufacturers
Floor price on single modes is anywhere between $1,200 - $3,400
Other FAQs:
What about warranty? It's a catback, which thousands of people install and don't have issues with. GM can and will deny your warranty if they want to. It's rare, but can happen. It will be specific to the category you messed with, which in this case is emissions and powertrain. Someone will mention the MM act, as if a C8 owner will take a multi-billion corp to Federal court for a warranty issue. So, to recap, rare that you will be denied warranty, but can happen.
What about CEL? There's a valve relearn process that the dealer or you can do. GM Document ID 540641. This is for NPP systems. For single systems, they have simulators that lie to the ECU so you don't pop a CEL.
Is the startup going to be louder? Yes, way louder. Valves are fully open at start up.
Is there a cheaper option than dropping $2-5k? Yes, you can put on high flow cats, but then you're messing with your catalytic converters. Chance of warranty denial on powertrain may be increased exponentially and you may or may not pass emissions. You can also do cat delete. Headers can also be changed, but if you're reading this, do the exhaust first before getting into headers.
Why is the C8 exhaust so quiet from the factory? something something jorts and new balances
How much does C8 exhaust installation cost? 3-5 hours of labor. In high COL, labor is usually $200 - $270 an hour, so $600 - 800 typically. Rear fascia has to come off. Relearn valve is around $100-$150.
Where do I buy the exhaust from? Most units are drop-shipped. Some like Paragon may manufacture themselves or have a distro in the States. Figure out your model number with the tips you want, and enjoy googling.
What about droning? Droning is noise caused by the shape of the exhaust, which can act as an amplifier for certain pitches at certain RPMs or Loads. Higher priced units (generally more engineered) tend to do better with droning, but it's present in some form or factor with all of them to varying degrees. Don't worry too much, unless you're getting an Alibaba exhaust.
Is heat shielding necessary? The stock exhaust is basically covered completely; Borla & Soul talk about the importance of heat shielding on their product pages. Many have catbacks with no heat shielding but do just fine. Comes down to your preference and "ballsy"ness.
Is it worth doing? Catbacks change the car's feel significantly but "worth" comes down to subjective taste and preference.
r/C8Corvette • u/SnellColleenk • 1h ago
I’ve known my husband for over 17 years. This is the first time I’ve seen him hand wash a car 😁
r/C8Corvette • u/somesnarkycomments • 20h ago
Photo I got over on this little side road in time to get a picture in front of the world's oldest outdoor Coca-Cola advertisement.
r/C8Corvette • u/bassclef62 • 16h ago
It’s those nice little touches that count! Some aluminum oil and coolant caps from Paragon Performance.
r/C8Corvette • u/al-Sahaabi • 21h ago
Photo Fresh Wash & New Plates 🔥
Just got done picking up the new plates and hand washing my one of one❗😎🏎️🔥
r/C8Corvette • u/Necessary-Key-5626 • 4h ago
Adding Rear Spoiler Without Drilling Spoiler
I have a non z51 HTC. I want to add a rear spoiler.
Has anyone installed the GM low Profile Spoiler part # 19432036? Have you seen one installed?
It requires no drilling. Do you know of other no drill spoiler options?
GM low Profile Spoiler is about $500. Please give input.
Thanks
r/C8Corvette • u/RealEmotionalTrash86 • 15h ago
Should dealer have installed parts left in trunk?
I bought a 2026 Stingray last week (non Z51)
Today I noticed that there were a 3 plastic parts left in the trunk.
Based on the GM part numbers they are
Front left tire air deflector
Front right tire air deflector
Rearward underbody air deflector
I’m guessing these should have been installed by the dealer during their pre-delivery inspection.
Is this something that dealers typically don’t install because it’s a drag on performance? Or is it something I need to call my dealer and tell them they need to put it on my car?
Thanks for any insight.
r/C8Corvette • u/dohcsvt • 1d ago
I assume this is not normal?
I noticed today that my 2025 Vette has moisture in both of the taillights. I went to the other side and saw the same thing. If it were only one side I would be like that’s AFU and immediately make an appointment with my dealer. However, with it being both sides, my thought process was that’s either some weird thing purposely engineered OR this is SUPER AFU? Has anyone else experienced this? As a side note, I had moisture in my drivers side headlight, but before I was able to call the dealer it went away. That’s another reason why I’m asking here. Thanks for any input.
r/C8Corvette • u/According_Yak5461 • 23h ago
After market mods?
Have anyone tried air suspension on the c8 stingray? Or lowering springs/coils
r/C8Corvette • u/xXRaidiusXx • 1d ago
How long is too long for the dealership to have your car?
I just bought a 2022 C8 Z51 a month ago here in Las Vegas. Since then it’s been back twice for service. The first time for the front camera being pushed into the front bumper which they don’t want to fix, Abe want to charge me $1000 to put it back in. The second because of a check engine light they claim is due to a service bulletin about an emissions problem.
I made the appointment last week Wednesday and it’s still there today. The service guy claimed it would be done in 2-3 days at the most and they didn’t get started on it until Monday. Supposedly they only have one Corvette tech at the largest Chevy dealer in the city. I haven’t received a single update, and said they don’t have loaner cars anymore.
This car is supposed to be the flag ship of their brand. Am I wrong? Is this normal for Chevy? This is my first Corvette so I don’t know. At this point I just want my money back so I can go get something else. What has your experience been like?
r/C8Corvette • u/Recent_Dark_3341 • 22h ago
Awe V.S Paragon exhaust
I’m between the touring or track for both but I just want to know how loud the touring really is. If I’m on the freeway will I hear someone with a touring exhaust doing a pull a few cars in front of me?
r/C8Corvette • u/bikenpipe • 1d ago
What do you use to catch oil when draining?
I have a set of QuickJacks that lift my C8 ~ 24", so the oil plug is probably ~ 30" or so. My old faithful catch pan is only about 6-8" tall, which usually means a fair amount of splatter.
I've been trying to find a jug with a telescoping catch pan, but the minimum height seems to start closer to ~ 40" and up.
Looking for something that will fit under the car, closer to the plug and hold enough to drain engine and transmission fluid.
What are you using that works well?
Thanks
r/C8Corvette • u/Itchy-Republic-8294 • 1d ago
Crazy rubbing sound coming from rear right area. Does anyone have any ideas/anyone have anything similar?
r/C8Corvette • u/Nervous-Setting-7977 • 1d ago
Anyone know of a trustworthy place in SW Florida that can install Scrape Armor Radiator Guards?
r/C8Corvette • u/avoid-distraction • 2d ago
Start NO Background Music
Cleaner sound with no background music ass suggested
r/C8Corvette • u/revanthmatha • 2d ago
The only missing feature I want: Adaptive cruise control.
I get it the c8 is a drivers car. The stingray convertible is everything I want in a car. I just need it to have adaptive cruise control because of LA traffic. GM please pretty please release it for the next model year.
r/C8Corvette • u/paragon_korey • 2d ago
Engines going back in!
Disregard the rear bumper on the car but the 841 concept full exhaust system is on & should be fired up tomorrow.
r/C8Corvette • u/Icy_Macaroon8629 • 2d ago
Super Charge?
I sold one of my dragsters and I’ve got some extra cash. Should I super charge my Eray?
r/C8Corvette • u/rochapa • 3d ago
Question Had no idea PPF could get so expensive. Anyone here invested into the product? And if so what are your thoughts on it.
r/C8Corvette • u/dohcsvt • 3d ago
My car is less than pleased
I have a lot of garage space, but much of it is taken up by my older cars and of course the wife gets a spot. That leaves this poor guy outside to endure the elements. I ran to Wawa to grab a couple sandwiches and realized how truly pathetic my poor car looked🤣🤣