Which ECU for the Mazda RX-7 FD 1992-2002 (13B-REW twin-turbo)?
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 46” counts the stock functions at least one ECU here wires.
Most complete
Haltech Elite 2500 HT-151300
Can carry 44 of 46 stock functions, with 5 spare outputs and 3 spare inputs left.
“Smallest” is by pin count, not price. Picks come from harnesses with no validation errors.
What each ECU wires and gives up
Haltech Elite 2500 HT-15130060 pins · proposal
44/46Engine 25 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.
- OMP stepper phase A2
- OMP stepper phase B2
Haltech Nexus S3 HT-21300068 pins · proposal
43/46Engine 36 out · 6 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.
- Boost control solenoid
- Turbo control solenoid
- Turbo pre-control solenoid
Haltech Elite 1500 HT-15090051 pins · proposal
40/46Engine 61 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.
- Boost control solenoid
- OMP stepper phase A2
- OMP stepper phase B2
- Turbo charge relief solenoid
- Turbo control solenoid
- Turbo pre-control solenoid
ECUs without a harness for this car
- ECUMASTER EMU BlackNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- Link G4X AtomXNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- Link G4X FuryXNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- Link G4X MonsoonXNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- Link G4X StormXNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- Link G4X XtremeXNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- MoTeC M130Needs add-onSequential twin-turbo control needed; not documented for this ECU
- MoTeC M150Needs add-onSequential twin-turbo control needed; not documented for this ECU
- MoTeC M170Needs add-onSequential twin-turbo control needed; not documented for this ECU
- MoTeC M190Needs add-onSequential twin-turbo control needed; not documented for this ECU
- MaxxECU GEN2 RACENeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- MaxxECU GEN2 TRACKNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- MaxxECU MININeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- MaxxECU PRONeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- MaxxECU RACENeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- MaxxECU SPORTNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- MaxxECU STREETNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- AMP EFI MS3Pro EVO+Needs add-onOil metering pump stepper driver needed; not documented for this ECU
- AMP EFI MS3Pro EVO+ HCNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- AMP EFI MS3Pro MiniNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- AMP EFI MS3Pro UltimateNeeds add-on · discontinuedOil metering pump stepper driver needed; not documented for this ECU
- rusEFI ProteusNeeds add-onSequential twin-turbo control needed; not documented for this ECU
- Emtron Shadow 8Needs add-onOil metering pump stepper driver needed; not documented for this ECU
- Emtron SL4Needs add-onOil metering pump stepper driver needed; not documented for this ECU
- Emtron SL6Needs add-onOil metering pump stepper driver needed; not documented for this ECU
- Emtron SL8Needs add-onOil metering pump stepper driver needed; not documented for this ECU
- SpeeduinoNeeds add-onOil metering pump stepper driver needed; not documented for this ECU
- Link RX7XPlug-inPlug-in: mates the stock plugs pin-for-pin, no adapter harness
- 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 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.