Eforce and headers
Team Owner
Joined: Aug 2011
Posts: 21,587
Likes: 1,614
From: GREER SC
I've got the 599hp kit with Kooks headers and their hi flo cats into the factory NPP. The sound is awesome! I get many compliments on it, especially at the drag strip and road course. They have been on the car for approximately 20,000 miles and have had 0 issues.
Pro
Joined: Nov 2007
Posts: 605
Likes: 15
From: Rocky Mountains Colorado
E-Force 549 kit with Kooks long tubes, high flow CATS, Corsa Sport exhaust. No issues or problems since the install 2.5 years ago. The 549 kit came with the 3.875" pulley which produced approximately 3lbs of boost at 6K feet so I dropped to the 3.5" pulley and now the 3.25" pulley with approximately 10lbs of boost.
Team Owner
Joined: Aug 2011
Posts: 21,587
Likes: 1,614
From: GREER SC
E-Force 549 kit with Kooks long tubes, high flow CATS, Corsa Sport exhaust. No issues or problems since the install 2.5 years ago. The 549 kit came with the 3.875" pulley which produced approximately 3lbs of boost at 6K feet so I dropped to the 3.5" pulley and now the 3.25" pulley with approximately 10lbs of boost.
Thread Starter
Melting Slicks
Joined: Jul 2000
Posts: 2,723
Likes: 115
From: Phoenix AZ
What kind of additional RWHP are you guys seeing with the installation of the headers?
Seems like the better brands of headers are getting 30-40 RWHP with a tune on a stock car. Can I assume those numbers would hold at least hold true for a supercharged car?
Seems like the better brands of headers are getting 30-40 RWHP with a tune on a stock car. Can I assume those numbers would hold at least hold true for a supercharged car?
Team Owner
Joined: Aug 2011
Posts: 21,587
Likes: 1,614
From: GREER SC
I would say yes, that's about right.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
Pro
Joined: Nov 2007
Posts: 605
Likes: 15
From: Rocky Mountains Colorado
When NA, I added BPP's CAI and the Kooks Long Tubes with high flow cats and Corsa Sport exhaust gaining approximately 30-40 RWHP. Can't say what RWHP impact the headers have had with the EForce as the exhaust was in place at the time the EForce was installed. I believe they help but cannot quantify the degree of improvement over OEM exhaust.