Starting tuning on a 2021 C8
Safety Car
Joined: Jul 2019
Posts: 4,079
Likes: 2,414
From: Florida
It would help if you let folks know what "performance" you want upgraded.
Do you want better lateral grip?
Are you looking to reduce weight?
Are you tracking and want better braking and if so what are you currently experiencing that's not working?
Do you want more acceleration power? If so how much more?
Do care about the powertrain warranty or not really?
Etc etc
Do you want better lateral grip?
Are you looking to reduce weight?
Are you tracking and want better braking and if so what are you currently experiencing that's not working?
Do you want more acceleration power? If so how much more?
Do care about the powertrain warranty or not really?
Etc etc
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
As far as I know you cannot tune any GM car/ TRK 2020 and newer including the Corvette
Best you can do without tearing into the engine is
1. Cat Back X-Pipe Exhaust adds about 20-25 RWHP
2. Cold air intake or drop in air filter adds about 11-12 RWHP
3 Pedal Commander adds 0 HP however the throttle response in exceptional
Takes the Stock Electronic pedal from 1-3 ratio all the way up to 3-1 ratio !!!!!!!!!!!
This is awesome
4 Maybe a set of headers adds about 12 15 RWHP but the exhaust sound in obnoxious
as will be a CAT Delete kit
Best you can do without tearing into the engine is
1. Cat Back X-Pipe Exhaust adds about 20-25 RWHP
2. Cold air intake or drop in air filter adds about 11-12 RWHP
3 Pedal Commander adds 0 HP however the throttle response in exceptional
Takes the Stock Electronic pedal from 1-3 ratio all the way up to 3-1 ratio !!!!!!!!!!!
This is awesome
4 Maybe a set of headers adds about 12 15 RWHP but the exhaust sound in obnoxious
as will be a CAT Delete kit
Pro
Joined: Apr 2019
Posts: 551
Likes: 263
The Lingenfelter Carbon Manifold, plus high flow cats, plus headers and finally throttle body and air filter. Could be worth nearly 100hp at the crank, but a total cost of $10k+, better to just bite the bullet and go Procharger IMO.
Safety Car
Joined: Jul 2019
Posts: 4,079
Likes: 2,414
From: Florida
Drifting
Joined: Mar 2020
Posts: 1,718
Likes: 150
From: Central Florida
Melting Slicks
Joined: Aug 2022
Posts: 2,784
Likes: 3,566
Lots of crack pipe hitters in here that look at tuner websites while they're supposed to be working and they just add up fake claimed gains. "Exhausts are 25hp", "Intake is 15hp", "Headers are 30hp", etc. First of all, those claimed gains are bullshit and second, it doesn't work like that even if they were real.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Advanced
Joined: Jul 2021
Posts: 59
Likes: 42
Yeah sadly adding parts is not cumulative on these cars. Plenty of dynos showing various degrees of success, but not one that I've seen showing the total combined claimed value of all mods (and not even close TBH). But best of luck to ya. Hope you get to where you want to be performance-wise!
Safety Car
Joined: Nov 2007
Posts: 4,436
Likes: 875
From: Bay Area CA
Like others have said, you don't add the claimed HP gains for each mod and total them out. I have seen several before and after Dynos with aftermarket PTR intake manifold, Soler 95 throttle body and Halltech air intake with total gains of 13 to 15 hp.
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
Lots of crack pipe hitters in here that look at tuner websites while they're supposed to be working and they just add up fake claimed gains. "Exhausts are 25hp", "Intake is 15hp", "Headers are 30hp", etc. First of all, those claimed gains are bullshit and second, it doesn't work like that even if they were real.
Not only did the CAT BACK exhaust add 20 RWHP It is also 60 llbs lighter than the stock exhaust system UNTUNED RESULTS TOO !!!!!!
Who's smokin crack now ? Not me maybe someone else--
Melting Slicks
Joined: Aug 2022
Posts: 2,784
Likes: 3,566
You waited 3 months to come back with that bullshyte? Okay dude. No cat back exhaust is going to give you 20whp. Nope. I'm not saying some tuner dude didn't show you a dyno sheet that suggested that, but it wasn't real. As for your mythical exhaust being 60 pounds lighter than stock: also no. The stock NPP cat back is 72 pounds, weighed several myself. So your exhaust weighs only 12 pounds then? Full titanium would weigh more than that. Try again.
Race Director
Joined: Jan 2014
Posts: 10,709
Likes: 7,102
From: Fulshear, TX
You waited 3 months to come back with that bullshyte? Okay dude. No cat back exhaust is going to give you 20whp. Nope. I'm not saying some tuner dude didn't show you a dyno sheet that suggested that, but it wasn't real. As for your mythical exhaust being 60 pounds lighter than stock: also no. The stock NPP cat back is 72 pounds, weighed several myself. So your exhaust weighs only 12 pounds then? Full titanium would weigh more than that. Try again.
Just out of curiosity, I did look up the weight of a Paragon titanium exhaust and here's what they list:
"Weighs in at 20 lbs vs the OEM of 77 lbs. 57lbs savings!"
Safety Car
Joined: Jul 2019
Posts: 4,079
Likes: 2,414
From: Florida
Pro
Joined: Feb 2021
Posts: 691
Likes: 177
Cat elimination?
I have been doing this for a long time. The simple truth is that it is very difficult and expensive to make major improvements on a naturally aspirated factory high performance engine. There will also be compromises with sound, reliability, drivability and service life.
I have been doing this for a long time. The simple truth is that it is very difficult and expensive to make major improvements on a naturally aspirated factory high performance engine. There will also be compromises with sound, reliability, drivability and service life.
Drifting
Joined: Mar 2020
Posts: 1,718
Likes: 150
From: Central Florida
It would help if you let folks know what "performance" you want upgraded.
Do you want better lateral grip?
Are you looking to reduce weight?
Are you tracking and want better braking and if so what are you currently experiencing that's not working?
Do you want more acceleration power? If so how much more?
Do care about the powertrain warranty or not really?
Etc etc
Do you want better lateral grip?
Are you looking to reduce weight?
Are you tracking and want better braking and if so what are you currently experiencing that's not working?
Do you want more acceleration power? If so how much more?
Do care about the powertrain warranty or not really?
Etc etc
You on board???
