pinswap
SupportSign in

‹ All cars

Which ECU for the Honda S2000 AP2 2006–09 converted to cable throttle?

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 52” counts the stock functions at least one ECU here wires.

Most complete

Emtron KV16

Can carry 52 of 52 stock functions (47 wired today), with 28 spare outputs and 17 spare inputs left.

Smallest that keeps every engine function

Emtron SL4

58 ECU pins, and still gives up nothing.

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

What each ECU wires and gives up

  • Emtron KV16120 pins · proposal
    47/52
    Gives up nothingEngine 2 not wired yet (free pin available)+5 it could still wire on free pins28 out · 17 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

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Engine

    • A/F sensor heater — Factory wideband A/F-sensor heater — left unwired in swaps: the aftermarket ECU runs its own wideband (or none), so the stock sensor and heater are deleted. Wire to a dedicated low-side heater driver only if retaining the OEM A/F sensor.
    • A/F sensor heater relay — Relay feeding the factory A/F-sensor heater circuit — left unwired in swaps (deleted with the sensor).

    Idle & accessories

    • Cruise main switch
    • Cruise resume switch
    • Cruise set switch

    Open harness → · Spare I/O

  • Emtron KV12115 pins · proposal
    47/52
    Gives up nothingEngine 2 not wired yet (free pin available)+5 it could still wire on free pins24 out · 17 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

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Engine

    • A/F sensor heater — Factory wideband A/F-sensor heater — left unwired in swaps: the aftermarket ECU runs its own wideband (or none), so the stock sensor and heater are deleted. Wire to a dedicated low-side heater driver only if retaining the OEM A/F sensor.
    • A/F sensor heater relay — Relay feeding the factory A/F-sensor heater circuit — left unwired in swaps (deleted with the sensor).

    Idle & accessories

    • Cruise main switch
    • Cruise resume switch
    • Cruise set switch

    Open harness → · Spare I/O

  • Emtron KV8106 pins · proposal
    47/52
    Gives up nothingEngine 2 not wired yet (free pin available)+5 it could still wire on free pins16 out · 17 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

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Engine

    • A/F sensor heater — Factory wideband A/F-sensor heater — left unwired in swaps: the aftermarket ECU runs its own wideband (or none), so the stock sensor and heater are deleted. Wire to a dedicated low-side heater driver only if retaining the OEM A/F sensor.
    • A/F sensor heater relay — Relay feeding the factory A/F-sensor heater circuit — left unwired in swaps (deleted with the sensor).

    Idle & accessories

    • Cruise main switch
    • Cruise resume switch
    • Cruise set switch

    Open harness → · Spare I/O

  • Emtron Shadow 868 pins · proposal
    41/52
    Gives up nothingEngine 3 not wired yet (free pin available)+11 it could still wire on free pins9 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

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Engine

    • A/F sensor heater — Factory wideband A/F-sensor heater — left unwired in swaps: the aftermarket ECU runs its own wideband (or none), so the stock sensor and heater are deleted. Wire to a dedicated low-side heater driver only if retaining the OEM A/F sensor.
    • A/F sensor heater relay — Relay feeding the factory A/F-sensor heater circuit — left unwired in swaps (deleted with the sensor).
    • Coolant temp sensor 2 — Second ECT sensor, used only by the OEM fan logic — left unwired in swaps: the aftermarket ECU runs the fan from ECT 1.

    Charging

    • Alternator FR signal

    Idle & accessories

    • Brake pedal switch
    • Cruise main switch
    • Cruise resume switch
    • Cruise set switch
    • Electrical load detector
    • Engine mount control solenoid

    Emissions

    • Fuel tank pressure sensor

    Open harness → · Spare I/O

  • Emtron SL866 pins · proposal
    41/52
    Gives up nothingEngine 3 not wired yet (free pin available)+11 it could still wire on free pins8 out · 8 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

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Engine

    • A/F sensor heater — Factory wideband A/F-sensor heater — left unwired in swaps: the aftermarket ECU runs its own wideband (or none), so the stock sensor and heater are deleted. Wire to a dedicated low-side heater driver only if retaining the OEM A/F sensor.
    • A/F sensor heater relay — Relay feeding the factory A/F-sensor heater circuit — left unwired in swaps (deleted with the sensor).
    • Coolant temp sensor 2 — Second ECT sensor, used only by the OEM fan logic — left unwired in swaps: the aftermarket ECU runs the fan from ECT 1.

    Charging

    • Alternator FR signal

    Idle & accessories

    • Brake pedal switch
    • Cruise main switch
    • Cruise resume switch
    • Cruise set switch
    • Electrical load detector
    • Engine mount control solenoid

    Emissions

    • Fuel tank pressure sensor

    Open harness → · Spare I/O

  • Emtron SL662 pins · proposal
    40/52
    Gives up nothingEngine 3 not wired yet (free pin available)+12 it could still wire on free pins5 out · 8 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

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Engine

    • A/F sensor heater — Factory wideband A/F-sensor heater — left unwired in swaps: the aftermarket ECU runs its own wideband (or none), so the stock sensor and heater are deleted. Wire to a dedicated low-side heater driver only if retaining the OEM A/F sensor.
    • A/F sensor heater relay — Relay feeding the factory A/F-sensor heater circuit — left unwired in swaps (deleted with the sensor).
    • Coolant temp sensor 2 — Second ECT sensor, used only by the OEM fan logic — left unwired in swaps: the aftermarket ECU runs the fan from ECT 1.

    Charging

    • Alternator FR signal

    Idle & accessories

    • Brake pedal switch
    • Cruise main switch
    • Cruise resume switch
    • Cruise set switch
    • Electrical load detector
    • Engine mount control solenoid

    Emissions

    • Evap canister vent shut valve
    • Fuel tank pressure sensor

    Open harness → · Spare I/O

  • Emtron SL458 pins · proposal
    38/52
    Gives up nothingEngine 3 not wired yet (free pin available)+14 it could still wire on free pins3 out · 8 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

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Engine

    • A/F sensor heater — Factory wideband A/F-sensor heater — left unwired in swaps: the aftermarket ECU runs its own wideband (or none), so the stock sensor and heater are deleted. Wire to a dedicated low-side heater driver only if retaining the OEM A/F sensor.
    • A/F sensor heater relay — Relay feeding the factory A/F-sensor heater circuit — left unwired in swaps (deleted with the sensor).
    • Coolant temp sensor 2 — Second ECT sensor, used only by the OEM fan logic — left unwired in swaps: the aftermarket ECU runs the fan from ECT 1.

    Charging

    • Alternator FR signal
    • Alternator control

    Idle & accessories

    • Brake pedal switch
    • Cruise main switch
    • Cruise resume switch
    • Cruise set switch
    • Electrical load detector
    • Engine mount control solenoid

    Emissions

    • Evap canister vent shut valve
    • Fuel tank pressure sensor
    • Secondary O2 heater

    Open harness → · Spare I/O

  • Haltech Nexus S3 HT-21300068 pins · proposal
    43/52
    Engine 4+5 it could still wire on free pins8 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.

    • Sensor ground 2
    • Sensor ground 3
    • Sensor voltage 2
    • Sensor voltage 3

    Not wired yet, but it has free pins for

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Idle & accessories

    • A/C switch signal
    • Brake pedal switch
    • Cruise clutch signal
    • Vehicle speed output

    Dash & gauges

    • Engine speed pulse (tacho)

    Open harness → · Spare I/O

  • Haltech Elite 2500 HT-15130060 pins · proposal
    40/52
    Engine 4+8 it could still wire on free pins8 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.

    • Sensor ground 2
    • Sensor ground 3
    • Sensor voltage 2
    • Sensor voltage 3

    Not wired yet, but it has free pins for

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Idle & accessories

    • A/C switch signal
    • Brake pedal position switch
    • Brake pedal switch
    • Cruise clutch signal
    • Cruise resume switch
    • Power steering load detector
    • Vehicle speed output

    Dash & gauges

    • Engine speed pulse (tacho)

    Open harness → · Spare I/O

  • Haltech Elite 1500 HT-15090051 pins · proposal
    39/52
    Engine 4+9 it could still wire on free pins1 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.

    • Sensor ground 2
    • Sensor ground 3
    • Sensor voltage 2
    • Sensor voltage 3

    Not wired yet, but it has free pins for

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Idle & accessories

    • A/C switch signal
    • Brake pedal position switch
    • Brake pedal switch
    • Cruise clutch signal
    • Cruise resume switch
    • Power steering load detector
    • Vehicle speed output

    Dash & gauges

    • Engine speed pulse (tacho)

    Emissions

    • Evap canister vent shut valve

    Open harness → · Spare I/O

  • MoTeC M800 universal60 pins · proposal
    38/52
    Engine 6Engine 1 not wired yet (free pin available)+8 it could still wire on free pins3 out · 4 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.

    • Ignition signal
    • Knock sensor
    • Sensor ground 2
    • Sensor ground 3
    • Sensor voltage 2
    • Sensor voltage 3

    Not wired yet, but it has free pins for

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Engine

    • A/F sensor heater — Factory wideband A/F-sensor heater — left unwired in swaps: the aftermarket ECU runs its own wideband (or none), so the stock sensor and heater are deleted. Wire to a dedicated low-side heater driver only if retaining the OEM A/F sensor.

    Idle & accessories

    • A/C switch signal
    • Brake pedal position switch
    • Brake pedal switch
    • Cruise clutch signal
    • Cruise resume switch
    • Vehicle speed output

    Dash & gauges

    • Engine speed pulse (tacho)

    Open harness → · Spare I/O

  • ECUMASTER EMU Black63 pins · proposal
    40/52
    Engine 4Idle & accessories 6+2 it could still wire on free pins3 out · 3 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.

    • Sensor ground 2
    • Sensor ground 3
    • Sensor voltage 2
    • Sensor voltage 3

    Idle & accessories

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

    • A/C switch signal
    • Brake pedal position switch
    • Brake pedal switch
    • Cruise clutch signal
    • Cruise resume switch
    • Power steering load detector

    Not wired yet, but it has free pins for

    No bigger ECU needed: the harness can be extended onto spare I/O.

    Idle & accessories

    • Vehicle speed output

    Dash & gauges

    • Engine speed pulse (tacho)

    Open harness → · Spare I/O

ECUs without a harness for this car

  • ECUMASTER EMU PRO 16LikelyTrigger pattern for Honda F22C1 not checked yet
  • Link G4X AtomXUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (Link's trigger-mode list is only inside PCLink, not online)
  • Link G4X FuryXUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (Link's trigger-mode list is only inside PCLink, not online)
  • Link G4X MonsoonXUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (Link's trigger-mode list is only inside PCLink, not online)
  • Link G4X StormXUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (Link's trigger-mode list is only inside PCLink, not online)
  • Link G4X XtremeXUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (Link's trigger-mode list is only inside PCLink, not online)
  • MoTeC M130UnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs ("Honda F20C" mode listed; no F22 mode named)
  • MoTeC M150UnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs ("Honda F20C" mode listed; no F22 mode named)
  • MoTeC M170UnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs ("Honda F20C" mode listed; no F22 mode named)
  • MoTeC M190UnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs ("Honda F20C" mode listed; no F22 mode named)
  • MaxxECU GEN2 RACEUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (list has "Honda F20C CAM" but no F22 entry)
  • MaxxECU GEN2 TRACKUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (list has "Honda F20C CAM" but no F22 entry)
  • MaxxECU MINIUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (list has "Honda F20C CAM" but no F22 entry)
  • MaxxECU PROUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (list has "Honda F20C CAM" but no F22 entry)
  • MaxxECU RACEUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (list has "Honda F20C CAM" but no F22 entry)
  • MaxxECU SPORTUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (list has "Honda F20C CAM" but no F22 entry)
  • MaxxECU STREETUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (list has "Honda F20C CAM" but no F22 entry)
  • AMP EFI MS3Pro EVO+UnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (MS3 "Honda RC51" mode lists AP1 S2000 only; no F22C1/AP2 decoder named)
  • AMP EFI MS3Pro EVO+ HCUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (MS3 "Honda RC51" mode lists AP1 S2000 only; no F22C1/AP2 decoder named)
  • AMP EFI MS3Pro MiniUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (MS3 "Honda RC51" mode lists AP1 S2000 only; no F22C1/AP2 decoder named)
  • AMP EFI MS3Pro UltimateUnconfirmed · discontinuedTrigger pattern for Honda F22C1 not found in the ECU's docs (MS3 "Honda RC51" mode lists AP1 S2000 only; no F22C1/AP2 decoder named)
  • rusEFI ProteusUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs (no S2000/F20C/F22C1 trigger decoder (Honda set: K cam 4+1, K crank 1/12, J30A2 24+1+1, CBR600, OBD1 distributor))
  • SpeeduinoUnconfirmedTrigger pattern for Honda F22C1 not found in the ECU's docs ("Honda J30/J32" decoder covers "early s2000's" (AP1) only; no AP2/F22C1 decoder)
  • 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
  • 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
  • AMP EFI MicrosquirtNot suitableOnly 2 ignition outputs; the engine has 4
  • 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 suitableSold only as V8 engine kits (LS, Hemi, Ford) with fixed trigger patterns; no Subaru, Honda or Mazda support found

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.