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Here is a list I found on the net, regarding what ECMs were what and what chips were what.
Please note, 85ECM and Chips MUST STAY as 85. But all other years you can mix and match ECMs and Chips.
You can install a complete 85ECM and Chip into a different car, but it has to be done as a package. You just can't install an 85 chip into an 86ECM or an 86chip into an 85ECM.
V6 Applications
| Year |
Transaxle |
Drive ratio |
Wheels/Tires |
Emissions |
ECM |
PROM |
CALPAK |
| 1985 |
auto |
1226869 |
FTX9349 |
16044802 |
| 4-spd |
FTY9355 |
| 1986 |
auto |
3.06 (FW2) |
Federal |
1227170 |
FBA1819 |
| California |
HWT5172 |
| 4-spd |
P215/60R14 |
Federal |
HWX5184 |
| California |
HWW5180 |
P205/60R15,
P215/60R15 |
Federal |
APR0164 |
| California |
APS0168 |
| 1986-87 |
auto |
3.33 (GX3) |
Federal |
FBA1819 |
| California |
AATC4620 |
| 5-spd |
P215/60R14 |
Federal |
FBB2902 |
| California |
HWU5176 |
P205/60R15,
P215/60R15 |
Federal |
APN0154 |
| California |
APP0158 |
| 1988 |
auto |
Federal |
AKYM3437 |
| California |
AKYR3452 |
| 5-spd |
Federal |
AKYN3442 |
| California |
AKYP3447 |
L4 Applications
| Year |
Transaxle |
Drive ratio |
ECM |
PROM |
| 1984 |
auto |
1226156 |
CLM6742
DKY1888
AMPK9335 |
| 4-spd M19 |
4.10 |
DDB0203
DDB3044
AMPL9338 |
| 4-spd MY8 |
3.32 |
DDC0196
DJC1438
AMPM9342 |
| 1985 |
auto |
1226864 |
DZA6875
HHZ1384 |
| 5-spd |
DYU6910
HFL1104 |
| 1986 |
auto |
FAT2968
AAMJ2225
ALRS5999 |
| 5-spd |
FAU2975 |
| 1987-88 |
auto |
1227748 |
BXB3550
ACMF9538
ALRT6078
ALWN6770
ANAK1661
ANBN2720
ATBW3572
ATCA3642 |
| 5-spd |
HHM3554
ACMH9544
ALRU6756
ANAL1664
ANBP2806
ASLB0327
ASCT9308
ATBS3563
ATBT3638 |
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Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.
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