NIStune Z32 ECU - Manual (Page 2)

Notes
1) The Z32 uses a switch on the TPS (Throttle Position Sensor) to sense closed throttle.
R33 RB25 S1 does not. The Z32 ECU will use default “limp” values to determine TPS
closed for idle calculations. This works quite effectively provided TPS is adjusted correctly.
2) We recommend Z32 (8 bit) ECU’s for this modification. These can be any JDM , EDM or
1990-1992 USDM model ECU. It does not matter if the ECU is naturally aspirated or turbo,
manual or auto. (Nissan part numbers 23710-30Pxx, 31Pxx, 37Pxx, 40Pxx, 41Pxx, 46Pxx,
47Pxx and 48Pxx).
Avoid later model USDM (1993-1996) 16 bit Z32 ECU’s (Nissan part numbers 23710-
45Pxx, 53Pxx, 51Pxx).
3) Note that most USDM Z32 ECU’s are not stamped with a Nissan part number. However
there is a manufacturer (JECS) part number which begins with A18. We can work out the
Nissan part number if you contact us with the JECS part number, or you can connect to
the ECU using any consult tool to retrieve the Nissan part number.
Instructions provided involve modifications to the ECU circuit board. Do not attempt
this unless you are proficient in this type of work. No responsibility taken for
information provided. Double check your work and continuity check all
modifications on the ECU connector before using in the vehicle!