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
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
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
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
