Need Help with Exhaust
Thread Starter
6th Gear
Joined: Apr 2026
Posts: 6
Likes: 1
Need Help with Exhaust
Need some advice on exhaust options for my C8 Z06.
Trying to decide if it’s smarter to:
Looking at brands like AWE, Corsa, Fabspeed, Valvetronic, Kline, etc.
Would appreciate honest feedback before I spend the money.
Trying to decide if it’s smarter to:
- Keep stock exhaust and just do high-flow cats/downpipes
or - Spend more and go full exhaust setup
- Was it worth the money?
- Big difference in sound/driving experience?
- Any drone or CEL issues?
Looking at brands like AWE, Corsa, Fabspeed, Valvetronic, Kline, etc.
Would appreciate honest feedback before I spend the money.
Supporting Vendor
Joined: Jan 2016
Posts: 82,111
Likes: 718
From: Orange County, CA
High flow cats will be the best bang for buck and make the biggest difference. However, people don't want to deal with the chance of CEL.
We do a lot of Milltek and Soul for the HFC.
Exhausts, AWE, Corsa, Fabspeed, and Soul.
We can work you a package deal!
-Josh
We do a lot of Milltek and Soul for the HFC.
Exhausts, AWE, Corsa, Fabspeed, and Soul.
We can work you a package deal!
-Josh
Le Mans Master
Joined: Mar 2001
Posts: 8,455
Likes: 3,948
From: Omaha
2020 Corvette of the Year Finalist (performance mods)
C4 of Year Winner (performance mods) 2019
The stock Z06 exhaust sounds so amazing, I'm just don't get why you'd want to change it. But if you do, I'd just do high flow cats.
Heel & Toe
Joined: Aug 2024
Posts: 23
Likes: 19
I did Milltek high flow cats and have been happy. It’s definitely louder, has a mildly different tone, and crackles more. I would do it again.
I’ve had them on the car for about six months and 1500-2000 miles. I’ve had a CEL pop twice but in both cases it was cold ambient air temp and cold start (30-35 degrees Fahrenheit). The first time I cleared it before it had a chance to self clear. The second time it self cleared within a day or two. At this point I just assume it’ll pop a few times per year, not a big deal to me but know it’s a possibility if you’re going to purchase. I kept the stock cats too, just in case.
I’ve had them on the car for about six months and 1500-2000 miles. I’ve had a CEL pop twice but in both cases it was cold ambient air temp and cold start (30-35 degrees Fahrenheit). The first time I cleared it before it had a chance to self clear. The second time it self cleared within a day or two. At this point I just assume it’ll pop a few times per year, not a big deal to me but know it’s a possibility if you’re going to purchase. I kept the stock cats too, just in case.
Supporting Vendor
Joined: Jan 2016
Posts: 82,111
Likes: 718
From: Orange County, CA
We've done plenty of Milltek and Soul cats though.
-Josh
Supporting Vendor
Joined: Nov 2015
Posts: 1,262
Likes: 278
From: Orange County, NY
Modifying your cats is a greater threat to your warranty vs doing a catback since you are modifying emissions components. A valved catback won't be as loud of an upgrade as a muffler delete. Just changing the catback can reduce more weight vs modifying the cats.
Corsa and AWE and Fabspeed all are made in USA I would lean towards these options for the best in fitment. If you plan on doing more than just a catback I would lean towards the Corsa dual mode for maximum ride comfort inside the car.. I don't think videos do any of these exhausts justice.
Please feel free to call or text to go over availability and dealer pricing. 201-575-0861
Thank you!
Ciro
Corsa and AWE and Fabspeed all are made in USA I would lean towards these options for the best in fitment. If you plan on doing more than just a catback I would lean towards the Corsa dual mode for maximum ride comfort inside the car.. I don't think videos do any of these exhausts justice.
Please feel free to call or text to go over availability and dealer pricing. 201-575-0861
Thank you!
Ciro
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http://www.corvetteexhaustsystems.com
sales@corvetteexhaustsystems.com
201-575-0861 (cell to call or text)
Your Ultimate Resource For Headers, Exhaust Systems & more for Corvette! I carry Corsa, Kooks, ARH, Borla, Billy Boat, Akrapovic, Capristo & Much More
http://www.corvetteexhaustsystems.com
sales@corvetteexhaustsystems.com
201-575-0861 (cell to call or text)
Your Ultimate Resource For Headers, Exhaust Systems & more for Corvette! I carry Corsa, Kooks, ARH, Borla, Billy Boat, Akrapovic, Capristo & Much More
