ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx
ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx

ProTunerz STM PRO + Plug and Play Harness Package for Datsun Z L-Series 240z 260z 280z 280zx

Regular price $1,638.00 Sale

USE CODE STM for 140$ off! exp FEB 2

Introducing the STM PRO ! This small but very powerful is based on many months of research and development with testing! For use on an any L-Series engine. Please Note Carb Heads need EFI intake provisions message us for more details
  • Smaller Foot print can install behind the kick panel with out cutting!
  • More inputs and outputs than MS3X and Haltech Elite 750
  • 8 Cylinder sequential spark and Fuel + 4 BAR MAP Sensor
  • Better Price than MS2/MS3x and Haltech Elite 750
  • Uses Tuner Studio software w/ Autotune
  • Built in Dual VR conditioner Thus a cleaner Crank / Cam Signal !
  • USB connector no need for adaptors
  • Amp Super Seal Connectors are smaller thus routing the harness through firewall NO MORE D-SUB Connectors!
We have combined the STM PRO with a Plug and Play terminated harness for the L-Series that includes our new fusebox design . Three main connections and your all set!

Professionally engineered and easy to install,  all wiring is composed hi-temp TXL automotive grade wire with OEM connectors. All relays and fusing live in a single fuse box and the fuel pump wiring / relays / fusing is big enough for pumps that can handle all your power right out of the box.  And did we mention it’s show-quality-drop-dead-gorgeous? We also added two expansion connectors one inside the cabin and one in the engine bay these connectors make it easier to add future inputs and outputs! The other end of the connector is also included.

ALL Package's Include

  • STM PRO ECU - With USB Cable and Basetune/Instructions
  • Plug and Play Terminated L-series Harness (TXL automotive grade wiring) Braided loom for that Pro Look!
  • FAN CONTROL output
  • ELECTRONIC BOOST CONTROL output
  • 2x IDLE AIR CONTROL PWM & 4 Wire Stepper IAC
  • TACH OUTPUT (need Tach adaptor for stock Tach 280z + 280zx)
  • TPS SENSOR your choice of Nissan or JZ
  • GM Coolant Temp Sensor Metric no need to tap your Thermostat housing
  • GM Air temp Sensor with (your choice steel/aluminum bung)
  • VSS Speed sensor (boost by gear/ Use for Speedo and Fuel Consumption
  • Launch input
  • 2x 100PSI Pressures sensors for Oil/Fuel Failsafes
  • Flex Fuel input E85 Ready
  • 2x Expansion connectors for Future inputs/outputs
  • Fusebox Detachable Terminated Fusebox With Relays/Fuses. Our new fusebox has 12 extra empty fuse positions and 2 relay for future usage.

    Selectable Options - If you don't have them they can be Purchased at Bundle Deal! Note when purchasing Wideband / Tach adaptor we will wire and configure that in the package

    • AEM Wideband This Wideband Controller monitors Air/Fuel Ratio a must for tuning/remote tuning,Data logging, failsafe/limits, Open and Closed loop AFR Strategies. HIGHLY RECOMMEND
    • OneSix Hall CAS - Drop in Crank Sensor uses NA oil spindle shaft common one,
    • LSX IGNITION COIL KIT - Our new LSX Ignition Coils Package
    • Fuel Injectors If you require 800cc or above please email

    You may Consider adding to your order.

    Required connections:
    Constant Power
    Constant Ground
    Switched Power (must have power while cranking)

    Harness kits are made to order 2 weeks

    ECU Functions

    • 4BAR Built MAP Sensor
    • Built in Dual VR Conditioner(selectable VR or HALL)
    • 8 x injectors Outputs
    • 8 x Ignition Output (selectable 5/12v) Coils with ignitors (Smart coils)
    • Sequential 8 Cylinder
    • 4 x High current (vvt , boost, idle 1, idle2)
    • 1 x High current High side output (12 volt Positive, can drive V-Tech solenoid)
    • 3 x low current, Fuel pump, Fan, Spare
    • (Total of 13 High Current outputs)
    • (Total of 3 Low current outputs)
    • 4 x EXTRA analog inputs 0-5v linear (Oil,Fuel pressure etc, Can be configured as temp resistor jumper)
    • Total of 9 external Analog inputs Including Air/CLT/TPS/02
    • Baro Internal
    • Flex input
    • 3 x Digital inputs (VSS etc)
    • Tach output (5v-12V Selectable)
    • Stepper idle (4 wire stepper) control plug in (Can be used for another 3 Medium current Outputs)
    • 16×16 tables for injection, ignition and AFR target maps.
    • CAN Bus Communication (Supports OBD2,

    Installation Instructions

    Important Note: To speed up your ECU / harness Package; when purchasing add message in check out for TPS type SX (stock + PTZ Throttle Body) or JZ (PTZ TB)

    SECONDLY if you are NOT adding coils/crank sensor/ injectors please add a note for. Type of coils , crank sensor and injector size and connector. Injector cannot be factory must be high impedance injectors.

    The ECU bundle is anywhere from 400-800$ less than our MS3x and Haltech Elite Package