ZR-1 DFCO Disabling
Thread Starter
Instructor
Joined: Sep 2003
Posts: 186
Likes: 0
From: On a dragstrip Thrashin' hell out of it...
ZR-1 DFCO Disabling
My 90 ZR-1 backfires on the overrun with headers
installed, it's driving me nuts.
What table/parameter in the .bin file needs
to be changed to stop the backfiring, I can't
see anything relating to DCFO?
installed, it's driving me nuts.
What table/parameter in the .bin file needs
to be changed to stop the backfiring, I can't
see anything relating to DCFO?
Melting Slicks
Joined: May 2001
Posts: 2,159
Likes: 64
From: Nichols Florida
Originally Posted by ZR1forFun
My 90 ZR-1 backfires on the overrun with headers
installed, it's driving me nuts.
installed, it's driving me nuts.
Tyler
Thread Starter
Instructor
Joined: Sep 2003
Posts: 186
Likes: 0
From: On a dragstrip Thrashin' hell out of it...
Originally Posted by Carl90
Checking the 90 ZR1 8EA ECM in TunerCat...I do not see any way to adjust decel realated parameters (timing or fuel).
Maybe Todd Pepmeier, ZR-1 cal guru could help out. I'll try e-mailing him.
Tyler, it's not an AFR problem per se, my friends ZR-1 started backfiring after headers were installed, he and I both have stock engines.
I'll let you know what I find.
Melting Slicks
Joined: May 2001
Posts: 2,159
Likes: 64
From: Nichols Florida
Originally Posted by ZR1forFun
Maybe Todd Pepmeier, ZR-1 cal guru could help out. I'll try e-mailing him.
Tyler, it's not an AFR problem per se, my friends ZR-1 started backfiring after headers were installed, he and I both have stock engines.
I'll let you know what I find.
Oh yeah. He is a link that shows what you are talking about on a 90 ZR 1 calibration.
http://www.sirgalahad.org/tyler/misc/dcfo.jpg
Tyler
Last edited by Tyler Townsley; Nov 10, 2004 at 11:37 PM.
Thread Starter
Instructor
Joined: Sep 2003
Posts: 186
Likes: 0
From: On a dragstrip Thrashin' hell out of it...
Just got the solution.
I e-mailed TC at TunerCat with my problem and he sent me the latest definition files for the $8E and $8EA ECMs. These allow access to the DFCO parameters in the ECM constants table.
I plan to try disabling the DCFO function by adjusting the parameters appropriately.
I e-mailed TC at TunerCat with my problem and he sent me the latest definition files for the $8E and $8EA ECMs. These allow access to the DFCO parameters in the ECM constants table.
I plan to try disabling the DCFO function by adjusting the parameters appropriately.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Safety Car
Joined: Dec 2003
Posts: 4,040
Likes: 3
From: "Same as it always was"
Originally Posted by ZR1forFun
Just got the solution.
I e-mailed TC at TunerCat with my problem and he sent me the latest definition files for the $8E and $8EA ECMs. These allow access to the DFCO parameters in the ECM constants table.
I plan to try disabling the DCFO function by adjusting the parameters appropriately.
I e-mailed TC at TunerCat with my problem and he sent me the latest definition files for the $8E and $8EA ECMs. These allow access to the DFCO parameters in the ECM constants table.
I plan to try disabling the DCFO function by adjusting the parameters appropriately.
JR at TeamZR1.com can help for sure
Thread Starter
Instructor
Joined: Sep 2003
Posts: 186
Likes: 0
From: On a dragstrip Thrashin' hell out of it...
Originally Posted by stano
JR at TeamZR1.com can help for sure
I might try contacting JR
