What model ECM is this ?

[Bruce Plecan]

Well, in most (just can't say every), prom the timing is ahead of the fuel,
starting at 0000, so there is a big clue.  The conversions for timing d to
actual degrees and d to VE (fuel) can be found in the programming 101 stuff.
  BTW, I don't atta glance see the redline change...
Grumpy
  RZ is as huch a hero to me as Martha Stewart....

| I did a compare on one of the snakeskiiners E-proms and then one that Ron
| Zimmer did for me.
| Ron took that chip S.S chip as a baseline and changed :
| 1. upped the timing a bit
| 2. leaned the fuel a tad
| 3. upped the rev limiter from 7,200 to 7,500 RPMs
| here is the diffs between those 2 E-proms (zimss = Zimmers changes )

| Address    ssorg      zimss      ssorg      zimss
| -------   ---(d)---  ---(d)---  ---(h)---  ---(h)---
|  004C8       163        160         A3         A0
|  004C9       170        163         AA         A3
|  004CA       187        161         BB         A1
|  004CB       193        168         C1         A8
|  005AD       139        131         8B         83
|  005AF       139        136         8B         88
|  005B2       136        137         88         89
|  005B4       136        137         88         89
|  0071D       121        122         79         7A
|  0071E       128        122         80         7A
|  0071F       128        122         80         7A
|  00720       128        122         80         7A
|  00721       128        122         80         7A
|  00722       128        122         80         7A
|  00723       128        122         80         7A
| -----
| So with knowing what he changed, can from this we determine where certain
| functions lie in the code address and
| go from there ?
| Thanks for everyones input in my learning curve
| John