O2 swing point in $6E
04-22-2017, 05:48 PM
#1
Member
Thread Starter
iTrader: (1)
Join Date: Feb 2013
Location: Tijeras, NM
Posts: 150
Likes: 0
Received 0 Likes
on
0 Posts
Car: 89 Black GTA
Engine: 'close to' stock 5.7 but trending>>
Transmission: 700
Axle/Gears: 3.27
O2 swing point in $6E
How do I adjust the o2 swing points in $6E using Tunerpro RT?
what tables, scalars, etc?
what tables, scalars, etc?
04-23-2017, 08:22 AM
#4
Member
Thread Starter
iTrader: (1)
Join Date: Feb 2013
Location: Tijeras, NM
Posts: 150
Likes: 0
Received 0 Likes
on
0 Posts
Car: 89 Black GTA
Engine: 'close to' stock 5.7 but trending>>
Transmission: 700
Axle/Gears: 3.27
Re: O2 swing point in $6E
my hc's are high cant pass emissions at idle.
hc's normal at 2000rpm. so i think it's my aftermarket cam's overlap.
i've read if you tighten the swing point limits you can get tighter control and lower hc.
hc's normal at 2000rpm. so i think it's my aftermarket cam's overlap.
i've read if you tighten the swing point limits you can get tighter control and lower hc.
04-23-2017, 08:32 AM
#5
Moderator
iTrader: (1)
Join Date: Mar 2002
Location: Chasing Electrons
Posts: 18,405
Likes: 0
Received 216 Likes
on
202 Posts
Car: check
Engine: check
Transmission: check
Re: O2 swing point in $6E
Code:
;----------------------------------------------
; UPPER ZERO ERROR REF FOR SLOW o2 R/L
; ARAP
;
; 02-20-1997 Dissassemby of ARAP Lines= 9
;
; TBL = .226 * mvdc
;----------------------------------------------
ORG $C459 ; mvdc Air Flow g/sec
;----------------------------------
LC459 FCB 140 ; 619 0
LC45A FCB 148 ; 655 8
LC45B FCB 152 ; 673 16
LC45C FCB 152 ; 673 24
LC45D FCB 148 ; 655 32
LC45E FCB 144 ; 637 40
LC45F FCB 132 ; 584 48
LC460 FCB 128 ; 566 56
LC461 FCB 125 ; 553 64
;----------------------------------------------
;----------------------------------------------
; LOWER ZERO ERROR REF FOR SLOW o2 R/L
;
; 02-20-1997 Dissassemby of ARAP Lines= 9
;
; TBL = .226 * mvdc
;----------------------------------------------
ORG $C462 ; mvdc Air Flow
;----------------------------------
LC462 FCB 120 ; 531 0
LC463 FCB 128 ; 566 8
LC464 FCB 132 ; 584 16
LC465 FCB 132 ; 584 24
LC466 FCB 128 ; 566 32
LC467 FCB 124 ; 549 40
LC468 FCB 112 ; 496 48
LC469 FCB 109 ; 482 56
LC46A FCB 106 ; 469 64
;----------------------------------------------
;----------------------------------------------
; Fast o2 Rich/lean Treshold vs Air Flow
;
; FAST o2 RICH IF LC4AD + LC453
; FAST o2 LEAN IF LC4AD - LC453
;
; (SUB OFF LC454 IF AIR DIVERT)
;
; 02-20-1997 Dissassemby of ARAP Lines= 9
;
; TBL = .226 * mvdc
;----------------------------------------------
ORG $C46B ; mvdc Air Flow g/sec
;----------------------------------
LC46B FCB 130 ; 575 0
LC46C FCB 138 ; 611 8
LC46D FCB 142 ; 628 16
LC46E FCB 142 ; 628 24
LC46F FCB 138 ; 611 32
LC470 FCB 134 ; 593 40
LC471 FCB 122 ; 540 48
LC472 FCB 120 ; 531 56
LC473 FCB 118 ; 522 64
;----------------------------------------------
04-23-2017, 01:47 PM
#6
Member
Thread Starter
iTrader: (1)
Join Date: Feb 2013
Location: Tijeras, NM
Posts: 150
Likes: 0
Received 0 Likes
on
0 Posts
Car: 89 Black GTA
Engine: 'close to' stock 5.7 but trending>>
Transmission: 700
Axle/Gears: 3.27
Re: O2 swing point in $6E
Tunerpro's ARAP bin has the table "Closed Loop Rich/Lean Threshold vs. Airflow" at 0x46B, so I'm guessing the disassembly table "Fast o2 Rich/lean Treshold vs Air Flow" is the same.
Notice that there are two values for 628
This is the only table that shows up for ARAP in Tunerpro that corresponds to the three tables in RBob's post, but I may be wrong about that.
Nevertheless, should I start tightening the values in this table to shorten the swing?
Notice that there are two values for 628
This is the only table that shows up for ARAP in Tunerpro that corresponds to the three tables in RBob's post, but I may be wrong about that.
Nevertheless, should I start tightening the values in this table to shorten the swing?