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Which ECU for the Mazda RX-7 FC 1986-92 (13B-T Turbo II)?

Every ECU below has a harness for this car. They all run the engine basics; the difference is how many of the stock ECU's other functions each one can still wire, and how much spare I/O is left for add-ons such as boost control or a wideband. “Of 41” counts the stock functions at least one ECU here wires.

Most complete

AMP EFI MS3Pro Ultimate

Can carry 41 of 41 stock functions, with 16 spare outputs and 11 spare inputs left.

Smallest that keeps every engine function

Haltech Elite 1500 HT-150900

51 ECU pins. Gives up 3 non-engine functions: idle & accessories, dash & gauges, power.

Most room for add-ons

MaxxECU PRO REV10+

42 spare outputs and 22 spare inputs after the stock wiring, with every engine function kept.

“Smallest” is by pin count, not price. Picks come from harnesses with no validation errors.

What each ECU wires and gives up

  • AMP EFI MS3Pro Ultimate93 pins · proposal
    41/41
    Gives up nothing16 out · 11 inDetails ▾

    Gives up (no free pin on this ECU)

    Nothing that another ECU wires for this car.

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • MaxxECU PRO REV10+155 pins · proposal
    40/41
    Power 142 out · 22 inDetails ▾

    Gives up (no free pin on this ECU)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • MoTeC M190 13190136 pins · proposal
    40/41
    Dash & gauges 135 out · 26 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • MoTeC M150 13150120 pins · proposal
    40/41
    Dash & gauges 123 out · 26 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • AMP EFI MS3Pro EVO+89 pins · proposal
    40/41
    Power 116 out · 11 inDetails ▾

    Gives up (no free pin on this ECU)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • AMP EFI MS3Pro EVO+ HC89 pins · proposal
    40/41
    Power 116 out · 11 inDetails ▾

    Gives up (no free pin on this ECU)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Emtron Shadow 868 pins · draft · 1 error
    40/41
    Dash & gauges 111 out · 8 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • MoTeC M170 1317066 pins · proposal
    40/41
    Dash & gauges 17 out · 4 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • MoTeC M130 1313060 pins · proposal
    40/41
    Dash & gauges 17 out · 3 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • MaxxECU GEN2 RACE136 pins · proposal
    39/41
    Dash & gauges 1Power 127 out · 17 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • rusEFI Proteus93 pins · proposal
    39/41
    Dash & gauges 1Power 121 out · 9 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • MaxxECU GEN2 TRACK93 pins · proposal
    39/41
    Dash & gauges 1Power 115 out · 7 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Link G4X XtremeX 109-400067 pins · draft
    39/41
    Dash & gauges 1Power 19 out · 9 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Emtron SL866 pins · draft
    39/41
    Dash & gauges 1Power 110 out · 5 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Link G4X FuryX 122-400068 pins · draft
    39/41
    Dash & gauges 1Power 18 out · 7 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Haltech Nexus S3 HT-21300068 pins · proposal
    39/41
    Dash & gauges 1Power 111 out · 4 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Link G4X StormX 108-400060 pins · draft
    39/41
    Dash & gauges 1Power 17 out · 5 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Emtron SL662 pins · draft
    39/41
    Dash & gauges 1Power 16 out · 5 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Emtron SL458 pins · draft
    39/41
    Dash & gauges 1Power 12 out · 5 inDetails ▾

    Gives up (no free pin on this ECU)

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • MaxxECU RACE REV9+80 pins · proposal
    38/41
    Idle & accessories 1Dash & gauges 1Power 114 out · 2 inDetails ▾

    Gives up (no free pin on this ECU)

    Idle & accessories

    Electrical load, A/C, fans, switches. Tune idle around them, or wire them to spare I/O later.

    • Starter input

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Haltech Elite 2500 HT-15130060 pins · proposal
    38/41
    Idle & accessories 1Dash & gauges 1Power 111 out · 2 inDetails ▾

    Gives up (no free pin on this ECU)

    Idle & accessories

    Electrical load, A/C, fans, switches. Tune idle around them, or wire them to spare I/O later.

    • Starter input

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • ECUMASTER EMU Black63 pins · proposal
    38/41
    Idle & accessories 1Dash & gauges 1Power 16 out · 3 inDetails ▾

    Gives up (no free pin on this ECU)

    Idle & accessories

    Electrical load, A/C, fans, switches. Tune idle around them, or wire them to spare I/O later.

    • Starter input

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Haltech Elite 1500 HT-15090051 pins · proposal
    38/41
    Idle & accessories 1Dash & gauges 1Power 13 out · 1 inDetails ▾

    Gives up (no free pin on this ECU)

    Idle & accessories

    Electrical load, A/C, fans, switches. Tune idle around them, or wire them to spare I/O later.

    • Starter input

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • MaxxECU SPORT REV9+48 pins · proposal
    35/41
    Engine 2Idle & accessories 2Dash & gauges 1Power 14 out · 1 inDetails ▾

    Gives up (no free pin on this ECU)

    Engine

    Engine sensors and actuators (fuel, spark, triggers, cam/valve control). Check whether the new ECU needs each one: a second cam sensor, for example, is often optional, a VTEC or VVT solenoid is not.

    • Knock input
    • Water temperature switch

    Idle & accessories

    Electrical load, A/C, fans, switches. Tune idle around them, or wire them to spare I/O later.

    • Clutch switch
    • Starter input

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Speeduino v0.436 pins · draft · 2 errors
    31/41
    Engine 6Idle & accessories 3Power 11 out · 2 inDetails ▾

    Gives up (no free pin on this ECU)

    Engine

    Engine sensors and actuators (fuel, spark, triggers, cam/valve control). Check whether the new ECU needs each one: a second cam sensor, for example, is often optional, a VTEC or VVT solenoid is not.

    • Airflow signal (AFM)
    • Atmospheric pressure (ATP)
    • Knock input
    • Manifold air temperature (MAT)
    • Variable resistor (tuning)
    • Water temperature switch

    Idle & accessories

    Electrical load, A/C, fans, switches. Tune idle around them, or wire them to spare I/O later.

    • Clutch switch
    • Neutral switch
    • Starter input

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • AMP EFI MS3Pro Mini35 pins · proposal
    29/41
    Engine 7Idle & accessories 2Dash & gauges 1Emissions 1Power 11 out · 2 inDetails ▾

    Gives up (no free pin on this ECU)

    Engine

    Engine sensors and actuators (fuel, spark, triggers, cam/valve control). Check whether the new ECU needs each one: a second cam sensor, for example, is often optional, a VTEC or VVT solenoid is not.

    • Atmospheric pressure (ATP)
    • Idle control (BAC)
    • Knock input
    • Relief valve
    • Switching valve
    • Variable resistor (tuning)
    • Water temperature switch

    Idle & accessories

    Electrical load, A/C, fans, switches. Tune idle around them, or wire them to spare I/O later.

    • Clutch switch
    • Starter input

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Emissions

    Emissions hardware. Usually deleted on race and off-road builds; may set a check-engine light or fail an inspection.

    • EGR valve

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Link G4X MonsoonX34 pins · draft
    29/41
    Engine 7Idle & accessories 2Dash & gauges 1Emissions 1Power 11 out · 0 inDetails ▾

    Gives up (no free pin on this ECU)

    Engine

    Engine sensors and actuators (fuel, spark, triggers, cam/valve control). Check whether the new ECU needs each one: a second cam sensor, for example, is often optional, a VTEC or VVT solenoid is not.

    • Atmospheric pressure (ATP)
    • Idle control (BAC)
    • Manifold air temperature (MAT)
    • Relief valve
    • Switching valve
    • Variable resistor (tuning)
    • Water temperature switch

    Idle & accessories

    Electrical load, A/C, fans, switches. Tune idle around them, or wire them to spare I/O later.

    • Clutch switch
    • Starter input

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Emissions

    Emissions hardware. Usually deleted on race and off-road builds; may set a check-engine light or fail an inspection.

    • EGR valve

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • MaxxECU STREET REV9+40 pins · proposal
    27/41
    Engine 8Idle & accessories 3Dash & gauges 1Emissions 1Power 14 out · 1 inDetails ▾

    Gives up (no free pin on this ECU)

    Engine

    Engine sensors and actuators (fuel, spark, triggers, cam/valve control). Check whether the new ECU needs each one: a second cam sensor, for example, is often optional, a VTEC or VVT solenoid is not.

    • Atmospheric pressure (ATP)
    • Idle control (BAC)
    • Knock input
    • O2 sensor signal
    • Relief valve
    • Switching valve
    • Variable resistor (tuning)
    • Water temperature switch

    Idle & accessories

    Electrical load, A/C, fans, switches. Tune idle around them, or wire them to spare I/O later.

    • Clutch switch
    • Neutral switch
    • Starter input

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Emissions

    Emissions hardware. Usually deleted on race and off-road builds; may set a check-engine light or fail an inspection.

    • EGR valve

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • Link G4X AtomX 111-400030 pins · draft
    25/41
    Engine 10Idle & accessories 3Dash & gauges 1Emissions 1Power 11 out · 0 inDetails ▾

    Gives up (no free pin on this ECU)

    Engine

    Engine sensors and actuators (fuel, spark, triggers, cam/valve control). Check whether the new ECU needs each one: a second cam sensor, for example, is often optional, a VTEC or VVT solenoid is not.

    • Atmospheric pressure (ATP)
    • Idle control (BAC)
    • Manifold air temperature (MAT)
    • O2 sensor signal
    • Pressure regulator control valve
    • Relief valve
    • Switching valve
    • Turbo control valve (boost)
    • Variable resistor (tuning)
    • Water temperature switch

    Idle & accessories

    Electrical load, A/C, fans, switches. Tune idle around them, or wire them to spare I/O later.

    • Clutch switch
    • Neutral switch
    • Starter input

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Emissions

    Emissions hardware. Usually deleted on race and off-road builds; may set a check-engine light or fail an inspection.

    • EGR valve

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

  • MaxxECU MINI REV10+30 pins · draft · 1 error
    23/41
    Engine 12Idle & accessories 3Dash & gauges 1Emissions 1Power 11 out · 0 inDetails ▾

    Gives up (no free pin on this ECU)

    Engine

    Engine sensors and actuators (fuel, spark, triggers, cam/valve control). Check whether the new ECU needs each one: a second cam sensor, for example, is often optional, a VTEC or VVT solenoid is not.

    • Atmospheric pressure (ATP)
    • CAS 2-tooth (G, cam)
    • Idle control (BAC)
    • Knock input
    • Manifold air temperature (MAT)
    • O2 sensor signal
    • Pressure regulator control valve
    • Relief valve
    • Switching valve
    • Turbo control valve (boost)
    • Variable resistor (tuning)
    • Water temperature switch

    Idle & accessories

    Electrical load, A/C, fans, switches. Tune idle around them, or wire them to spare I/O later.

    • Clutch switch
    • Neutral switch
    • Starter input

    Dash & gauges

    Gauge and warning-light drives. The cluster may lose a gauge or a light.

    • Ignition feedback (tacho)

    Emissions

    Emissions hardware. Usually deleted on race and off-road builds; may set a check-engine light or fail an inspection.

    • EGR valve

    Power

    Memory (battery-constant) feed. Only needed by ECUs with a keep-alive input.

    • Battery constant (+12V)

    Not wired yet, but it has free pins for

    —

    Open harness → · Spare I/O

ECUs without a harness for this car

  • AEM EMS 30-1042Not suitable · discontinuedPlug-in for Honda NSX NA1 1991-2005 (C30A) only; this car's stock plugs differ
  • AMP EFI AMP PNP Miata NA6Not suitablePlug-in for MX-5 Miata NA6 1990-93 (B6-ZE, 1.6) only; this car's stock plugs differ
  • AMP EFI AMP PNP Miata NA8 94-95Not suitablePlug-in for MX-5 Miata NA8 1994-97 (BP-ZE, 1.8) only; this car's stock plugs differ
  • AMP EFI AMP PNP Miata NA8 96-97Not suitablePlug-in for MX-5 Miata NA8 1994-97 (BP-ZE, 1.8) only; this car's stock plugs differ
  • AMP EFI AMP PNP Miata NB1Not suitablePlug-in for MX-5 Miata NB1 1999-00 (BP-4W) only; this car's stock plugs differ
  • AMP EFI AMP PNP Miata NB2Not suitablePlug-in for MX-5 Miata NB2 2001-05 (BP-Z3, VVT) only; this car's stock plugs differ
  • MaxxECU C6 E38 Plug-inNot suitablePlug-in for Chevrolet Corvette C6 2005-13 (LS2/LS3/LS7) only; this car's stock plugs differ
  • Link CIVICLink K20XNot suitablePlug-in for RSX Type-S 2002-04 (K20A2) only; this car's stock plugs differ
  • Link E36XNot suitablePlug-in for BMW 3 Series E36 1990–2000 (M50/M52) only; this car's stock plugs differ
  • Haltech Elite 1500 HT-140960 (02-04 RSX PnP)Not suitablePlug-in for RSX Type-S 2002-04 (K20A2) only; this car's stock plugs differ
  • Haltech Elite 1500 HT-140961 (05-06 RSX PnP)Not suitablePlug-in for RSX Type-S 2005-06 (K20Z1) only; this car's stock plugs differ
  • ECUMASTER EMU Black PnP ECU2JZBNot suitablePlug-in for Toyota Supra A80 1993-98 USDM (2JZ-GTE, non-VVT) only; this car's stock plugs differ
  • ECUMASTER EMU Black PnP K20A2Not suitablePlug-in for RSX Type-S 2002-04 (K20A2) only; this car's stock plugs differ
  • ECUMASTER EMU PRO 16Not suitableRotary engine; rotary decode / leading-trailing ignition not documented for this ECU
  • Hondata FlashProNot suitablePlug-in for AP2 2006–09 (F22C1, DBW) only; this car's stock plugs differ
  • Link G4X S2000XNot suitablePlug-in for AP1 2000–03 (F20C), AP2 2004–05 (F22C1, cable) only; this car's stock plugs differ
  • rusEFI Hellen 125 Honda KNot suitablePlug-in for RSX Type-S 2002-04 (K20A2) only; this car's stock plugs differ
  • Hondata KPro4Not suitablePlug-in for RSX Type-S 2002-04 (K20A2) only; this car's stock plugs differ
  • Emtron KV12Not suitableRotary engine; rotary decode / leading-trailing ignition not documented for this ECU
  • Emtron KV16Not suitableRotary engine; rotary decode / leading-trailing ignition not documented for this ECU
  • Emtron KV8Not suitableRotary engine; rotary decode / leading-trailing ignition not documented for this ECU
  • MoTeC M800Not suitable · discontinuedRotary engine; rotary decode / leading-trailing ignition not documented for this ECU
  • AMP EFI MicrosquirtNot suitableOnly 2 ignition outputs; the engine has 3
  • MaxxECU Mustang 2011-14 plug-inNot suitablePlug-in for Mustang GT 2011–14 (Coyote 5.0) only; this car's stock plugs differ
  • Link MX5NAXNot suitablePlug-in for MX-5 Miata NA6 1990-93 (B6-ZE, 1.6), MX-5 Miata NA8 1994-97 (BP-ZE, 1.8) only; this car's stock plugs differ
  • Link MX5NB1XNot suitablePlug-in for MX-5 Miata NB1 1999-00 (BP-4W) only; this car's stock plugs differ
  • Link MX5NB2XNot suitablePlug-in for MX-5 Miata NB2 2001-05 (BP-Z3, VVT) only; this car's stock plugs differ
  • Link RX7XNot suitablePlug-in for Mazda RX-7 FD 1992-2002 (13B-REW twin-turbo) only; this car's stock plugs differ
  • Link SupraLinkNot suitablePlug-in for Toyota Supra A80 1993-98 USDM (2JZ-GTE, non-VVT) only; this car's stock plugs differ
  • Holley Terminator X MAXNot suitableRotary engine; rotary decode / leading-trailing ignition not documented for this ECU

Categories are read from the stock pin names and are a guide; each item shows its full stock name. Power and ground pins aren't compared, since every harness powers and grounds the ECU. Prices aren't considered. Always check the harness's own findings before building.