C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Adjusting DFCO

Thread Tools
 
Search this Thread
 
Old Jun 28, 2020 | 11:09 AM
  #1  
jmgtp's Avatar
jmgtp
Thread Starter
Drifting
15 Year Member
Photogenic
Liked
Loved
 
Joined: Aug 2009
Posts: 1,964
Likes: 242
Default Adjusting DFCO

Decided to play with DFCO in an attempt to smooth out some cam surge.

It was originally set to enable @ 1400 (which I believe means anything above 1400?) and disable at 1200. I changed those numbers to 2000 and 1500, respectively. Seems to have helped some, or perhaps improved only in my head. I am trying to reduce a surge/buck as I decelerate in gear clutch engaged. Something like coming down to a stop in 3rd without downshifting and declutching around 1500 rpm before stopping.

Am I doing the right things with DFCO? Anything else to try?

did we not have a scan/tune section years ago? I thought we did and it since has disappeared.
Reply
Old Jun 28, 2020 | 12:11 PM
  #2  
dizwiz24's Avatar
dizwiz24
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2001
Posts: 14,622
Likes: 748
From: NEwhere Ohio
Default

Originally Posted by jmgtp
Decided to play with DFCO in an attempt to smooth out some cam surge.

It was originally set to enable @ 1400 (which I believe means anything above 1400?) and disable at 1200. I changed those numbers to 2000 and 1500, respectively. Seems to have helped some, or perhaps improved only in my head. I am trying to reduce a surge/buck as I decelerate in gear clutch engaged. Something like coming down to a stop in 3rd without downshifting and declutching around 1500 rpm before stopping.

Am I doing the right things with DFCO? Anything else to try?

did we not have a scan/tune section years ago? I thought we did and it since has disappeared.
yea the c4 site has been bastrdized but really those forums moved so slow.

it was tough to get a response in those sub forums. Im happier its been combined into c4 tech.

DFCO - ive always been told to disable it. Make it not functional in a mod’d car
Reply
Old Jun 28, 2020 | 01:33 PM
  #3  
jmgtp's Avatar
jmgtp
Thread Starter
Drifting
15 Year Member
Photogenic
Liked
Loved
 
Joined: Aug 2009
Posts: 1,964
Likes: 242
Default

I need to check to see if there is a min MPH for DFCO to be disabled. Maybe it’s just too low for my liking. Have no issues at speed, it’s just under ~15mph stuff where I can feel the engine kick sometimes.
Reply

Get notified of new replies

To Adjusting DFCO





All times are GMT -4. The time now is 05:12 PM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE