Do I need to retune after intake Install
Thread Starter
8th Gear
Joined: Dec 2015
Posts: 8
Likes: 0
Do I need to retune after intake Install
I recently dyno tuned my c5 corvette. It has long tubes and chatted mid pipe and corsa catback. I recently just bought the k&n air intake system. Will my tune that I have be messed up if I install the air intake
.
Joined: Apr 2013
Posts: 5,042
Likes: 1,156
From: Oregon
St. Jude Donor '14-'15-'16-'17-'18-'19-'20-'21-'22-'23
Mine did not. I never even used a dyno for my tune. I just used an old school Diablo preditor to do it. Now with that being said, I now use Chuck Cow for remote tuning since I have alot more things to do...
Former Vendor
Joined: Nov 2005
Posts: 11,792
Likes: 255
From: Ossining New York
St. Jude Donor '07-'08-'09-'10-'12-'13-'14
While nobody seems to know....
YES ABSOLUTELY, when you change ANY AIR INTAKE the tune is basically ruined.
At GM, every intake is fitted to a machine and air is flowed thru it. The machine generates a graph
called a "MAF TRANSFER FUNCTION". That table converts the MAF's frequency (when air passes thru the MAF)
into a grams per cylinder valuse which the pcm uses to calculate fuel.
No matter what intake you have...or switch to.... IF IT'S NOT STOCK WITH A STOCK TUNE...
You need to re-tune it.
Chuck CoW
Le Mans Master
Joined: Sep 2014
Posts: 5,278
Likes: 539
From: Kelowna BC
I did pretty much the same route. Headers, MagnaFlow cats and X, with a tune.
Later I installed a K&N intake (almost as much from disliking the strap system as anything). I installed it under the premise of the car having the ability to adapt similarly to a dirty filter; the tables are able to adjust from everything I've read.
Later I installed a K&N intake (almost as much from disliking the strap system as anything). I installed it under the premise of the car having the ability to adapt similarly to a dirty filter; the tables are able to adjust from everything I've read.
Former Vendor
Joined: Nov 2005
Posts: 11,792
Likes: 255
From: Ossining New York
St. Jude Donor '07-'08-'09-'10-'12-'13-'14
Former Vendor
Joined: Nov 2005
Posts: 11,792
Likes: 255
From: Ossining New York
St. Jude Donor '07-'08-'09-'10-'12-'13-'14
That is a VERY POPULAR LIE!
I did pretty much the same route. Headers, MagnaFlow cats and X, with a tune.
Later I installed a K&N intake (almost as much from disliking the strap system as anything). I installed it under the premise of the car having the ability to adapt similarly to a dirty filter; the tables are able to adjust from everything I've read.
Later I installed a K&N intake (almost as much from disliking the strap system as anything). I installed it under the premise of the car having the ability to adapt similarly to a dirty filter; the tables are able to adjust from everything I've read.
That is a VERY POPULAR LIE!
While the car has a FUEL TRIM SYSTEM that adjusts for very small changes in fueling for idle, part throttle, and cruise....
IT DOES ABSOLUTELY NOTHING for wide open throttle.
Even when it's does adjust, if you're not far from the "CORRECT" target the performance is poor and you risk
pinging or detonation.... AND if it's off on the low end, it only gets WORSE when you go up the scale (or rpms).
While air intakes are not big power adders...They have a TREMENDOUS impact on how the car calculates fuel.
Don't mess around.
Chuck CoW
Last edited by Chuck CoW; Jan 24, 2017 at 12:56 AM.
Melting Slicks
Joined: Jul 2014
Posts: 2,782
Likes: 314
From: The Lowcountry South Carolina
USMC.ret
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