MAT temp vs MAT table (S_AUJP)

[34blazer]

Tempretures are very differant. What INT temp makes no fueling change? What MAT temp makes no fueling change. Then match up columns. It can work. Newer stuff has IAT and ECT blend table for Dynamic Air Temp.

The reason it does not line up is data tracing is from a tempreture and the value is counts.

i understand that, the data matches up with the temp in the left column. but the right column is off, thats what im trying to fix. so when i adjust the value at a certain temp, it acutally is an adjustment to the corresponding cell. no guess work even keeping interpolation in mind.

[EagleMark]

I think I figured out why that is not accurate... MAT is counts and your data tracing with C tepm. It need a lookup table.

  ;*   A/D  degrees  A/D
;*  counts     C  Inv
;*  ------- -------  ---
;*  255     -40    0
;*  251     -30    4
;*  250     -25    5
;*  247     -20    8
;*  245     -15   10
;*  241     -10   14
;*  237     - 5   18
;*  231       0   24
;*  225       5   30
;*  218      10   37
;*  209      15   46
;*  199      20   56
;*  189      25   66
;*  177      30   78
;*  165      35   90
;*  152      40  103
;*  139      45  116
;*  126      50  129
;*  114      55  141
;*  102      60  153
;*  92      65  163
;*  81      70  174
;*  72      75  183
;*  64      80  191
;*  56      85  199
;*  50      90  205
;*  44      95  211
;*  39     100  216
;*  34     105  221
;*  30     110  225
;*  26     115  229
;*  23     120  232
;*  21     125  234
;*  18     130  237
;*  16     135  239
;*  14     140  241
;*  13     145  242
;*  12     150  243
;*  0     200  255

[34blazer]

ill have to figure out how to change that in the ADX, thanks!!! my weekend doesnt start until next tuesday, ill try and look into before then.

[34blazer]

I also wanted to be able to use more of the MAT counts table for better resolution, considering my max IAT temps maybe get to 140*F or 60*C on a hot vegas day. so i was just looking at the $8D hac and at L87FD i can see all the bytes.

-------------------------------------------------------------
; MAT COMP Vs MAT
; TABLE is MAT COMP COUNTS
;-------------------------------------------------------------
; VAL BIN MAT Deg c
;----------------------------------
L87FD: .byte 0x00 ;= 0, 0 -40
.byte 0x0C ;= 12, 12 -28
.byte 0x18 ;= 24, 24 -16
.byte 0x24 ;= 36, 36 - 4
.byte 0x30 ;= 48, 48 8
.byte 0x3C ;= 60, 60 20
.byte 0x48 ;= 72, 72 32
.byte 0x54 ;= 84, 84 44
.byte 0x60 ;= 96, 96 56
.byte 0x6C ;=108, 108 68
.byte 0x78 ;=120, 120 80
.byte 0x80 ;=128, 128 92
.byte 0x80 ;=128, 128 104
.byte 0x80 ;=128, 128 116
.byte 0x80 ;=128, 128 128
.byte 0x80 ;=128, 128 140
.byte 0x80 ;=128, 128 152
;

Now could i just open up hex editor and change each byte starting at, say, -12 or 0x0c and end at 72 or 0x48? Or would that mess up the checksum? i would change the XDF and ADX to match as well.

[EagleMark]

That may confuse the ECM as well? I wouldn't mess with it, just fix the ADX...

[34blazer]

That may confuse the ECM as well? I wouldn't mess with it, just fix the ADX...

understood. I need to get my feet wet and ive been wanting to change that for awhile now. Ill continue to ask around or until I become too impatient and change it anyway to find out what happens LOL.