Late model Z31 have a 4 pin connector template near by the EPROM with numbers 33...30 on it
these map to
30 E
31 A15
32 A14
33 R/W
this means installs in late model ecus do not need to solder to the CPU pins, but instead to this connector. the current NIStune revision A/B board connectors are left-to-right read as
3 A15
2 E
1 R/W
so you can change the soldering on your installs if you wish
this also applies to later model HR31s also. all later model EPROM nissans have these too. make installation a bit easier...
revision C boards have four wires connector coming out in this order already. earlier model ecus without this mask will still need to solder to the CPU pins however
Late model Z31/R31 different installation!
Moderator: Matt