FuelTech FT700 / FT700 PLUS is a 122-pin wire-in FuelTech ECU on 5 connectors: A (34 pins), B (34 pins), C (26 pins), D (26 pins) and M (2 pins).
It has 16 injector outputs and 12 ignition outputs. The injector drivers are saturated, which means high-impedance injectors. Low-impedance ones need a ballast resistor pack or a different ECU. The ignition outputs are logic-level. Smart coils plug straight in; dumb coils need an igniter in between.
There are 2 dedicated trigger inputs, each happy with a VR or a Hall sensor. There is no knock input on the ECU itself; knock control needs a separate knock box. It has 2 onboard wideband controllers, so a sensor wires straight in. The MAP sensor is built in.
It has H-bridge outputs labelled for an electronic throttle, so drive-by-wire runs from the ECU itself. Four CAN buses handle dashes, PDMs and expansion. 22 outputs can switch 12V as well as ground.
Spec sheet
| Connectors | A (34), B (34), C (26), D (26), M (2)122 pins in this profile |
|---|---|
| Injector outputs | 16saturated (high-impedance only) |
| Ignition outputs | 12logic-level: smart coils, or an igniter for dumb coils |
| Dedicated trigger inputs | 2VR or Hall |
| Knock inputs | None on the ECUknock control needs an external knock box |
| Onboard wideband controllers | 2 |
| Onboard MAP sensor | Yes |
| CAN buses | 4 |
| Drive-by-wire | Yes |
| High-side outputs | 22 |
| Half-bridge outputs | 22H-bridge pairs for a throttle motor or stepper |
| 5V sensor supply | 1 pin |
Worth knowing
- Connectors C and D are optional harnesses; ignition 9-12, yellow 9-22, CAN C and both widebands need them.
- CAN D is on the optional M harness.
- Yellow 21 and 22 feed the wideband heaters when both widebands are used.
- No native knock input yet; FuelTech says it is planned.
Which builds it suits
Of the 58 swap presets in the planner, 28 fit as they are and 30 fit with add-ons, so every one of them can be made to work. The add-on it asks for most often is an external igniter. The planner fills anything a preset leaves open with its ordinary defaults, so your own build may land differently.
It runs the GM LS LQ4/LQ9 (Gen3 6.0 iron), Nissan RB25DET non-Neo S2 (R33, smart coils), Nissan VQ35HR (High-Rev, 2007+) and Subaru EJ/FA FA20D (BRZ/86 NA) presets with nothing added. The Toyota 2JZ-GTE non-VVTi needs an external igniter. The Ford Barra 4.0 Turbo (240T/245T/270T/310T/325T) needs an external igniter.
Fits as it is 28
- GM LS1 (Gen3 5.7 alum)
- GM LS6 (Gen3 5.7 alum)
- GM LS LQ4/LQ9 (Gen3 6.0 iron)
- GM LS2 (Gen4 6.0 alum)
- GM LS3 (Gen4 6.2 alum, car)
- GM LS L76 (Gen4 6.0 alum)
- GM LS L92 (Gen4 6.2 alum)
- GM LS LY6/L96 (Gen4 6.0 iron)
- GM LSA (Gen4 6.2 alum, S/C)
- Nissan RB25DET non-Neo S2 (R33, smart coils)
- Nissan RB25DET Neo (R34)
- Nissan RB26DETT (R34, smart coils)
- Nissan VR38DETT (R35 GT-R)
- Nissan SR20DET (S15)
- Nissan VQ35DE (base, 2003-04)
- Nissan VQ35DE Rev-Up (2005-06)
- Nissan VQ35HR (High-Rev, 2007+)
- Honda K20 (i-VTEC 2.0 NA)
- Honda K24 (i-VTEC 2.4 NA)
- Subaru EJ/FA EJ20 turbo single-AVCS (EJ207 v7-9)
- Subaru EJ/FA EJ20 turbo dual-AVCS (EJ207 GRB 2008+)
- Subaru EJ/FA EJ25 turbo single-AVCS (EJ257 2004-07)
- Subaru EJ/FA EJ25 turbo dual-AVCS (EJ257 2008+)
- Subaru EJ/FA FA20D (BRZ/86 NA)
- Mazda Rotary 13B-REW (FD RX-7)
- Mazda Rotary 13B-MSP Renesis (RX-8 manual, 6-injector)
- Mazda Rotary 13B-MSP Renesis (RX-8 auto, 4-injector)
- Mazda Rotary 20B (Eunos Cosmo 3-rotor)
Fits with add-ons 30
- Toyota 1JZ-GE distributor (NA, early) with an external igniter
- Toyota 1JZ-GE VVT-i (coil pack) with an external igniter
- Toyota 1JZ-GTE non-VVTi with an external igniter
- Toyota 1JZ-GTE VVTi with an external igniter
- Toyota 2JZ-GE distributor (NA, early) with an external igniter
- Toyota 2JZ-GE VVT-i (coil pack) with an external igniter
- Toyota 2JZ-GTE non-VVTi with an external igniter
- Toyota 2JZ-GTE VVTi with an external igniter
- GM LT1 (Gen5 6.2 alum) with a direct-injection driver module
- GM LT4 (Gen5 6.2 alum, S/C) with a direct-injection driver module
- Ford Coyote 5.0 Gen1 (2011-14) with an external igniter
- Ford Coyote 5.0 Gen2 (2015-17) with an external igniter
- Ford Coyote 5.0 Gen3 (2018-23) with an external igniter
- Ford Modular 4.6 2V (SOHC) with an external igniter
- Ford Modular 4.6 4V Cobra (NA, cable) with an external igniter
- Ford Modular 4.6 4V Terminator (S/C, cable) with an external igniter
- Ford Modular 5.4 4V Ford GT (S/C, cable) with an external igniter
- Ford Modular 5.4 4V GT500 (S/C, DBW) with an external igniter
- Ford Coyote Voodoo 5.2 (GT350, flat-plane) with an external igniter
- Ford Coyote Predator 5.2 (GT500, cross-plane, S/C) with an external igniter
- Ford Barra 4.0 NA (182/190/195) with an external igniter
- Ford Barra 4.0 Turbo (240T/245T/270T/310T/325T) with an external igniter
- Nissan RB20DET with an external igniter
- Nissan RB25DET non-Neo S1 (R33, dumb coils) with an external igniter
- Nissan RB26DETT (R32/R33, dumb coils) with an external igniter
- Nissan SR20DET (S13) with an external igniter
- Nissan SR20DET (S14) with an external igniter
- Subaru EJ/FA FA20DIT (WRX turbo 2015+) with a direct-injection driver module
- BMW S54 (3.2 NA I6, E46 M3) with an external igniter
- BMW N54 (3.0 twin-turbo I6) with a direct-injection driver module, an external igniter
Plan a build around the FuelTech FT700 / FT700 PLUS
Pin table
By connector: A carries 16 injector outputs, 8 ignition outputs and 8 H-bridge outputs; B carries 2 trigger inputs, 20 analog inputs and 2 CAN buses; C carries 4 ignition outputs, 14 H-bridge outputs and 1 CAN bus; D carries 12 analog inputs and 2 wideband pins; M carries 1 CAN bus.
Show all 122 pins
| Pin | Function |
|---|---|
| A 1 | Blue output #01 |
| A 2 | Blue output #02 |
| A 3 | Blue output #03 |
| A 4 | Blue output #04 |
| A 5 | Blue output #05 |
| A 6 | Blue output #06 |
| A 7 | Blue output #07 |
| A 8 | Blue output #08 |
| A 9 | Blue output #09 |
| A 10 | Blue output #10 |
| A 11 | Blue output #11 |
| A 12 | Blue output #12 |
| A 13 | Blue output #13 |
| A 14 | Blue output #14 |
| A 15 | Blue output #15 |
| A 16 | Blue output #16 |
| A 17 | Power ground input |
| A 18 | Gray output #01 |
| A 19 | Gray output #02 |
| A 20 | Gray output #03 |
| A 21 | Gray output #04 |
| A 22 | Gray output #05 |
| A 23 | Gray output #06 |
| A 24 | Gray output #07 |
| A 25 | Gray output #08 |
| A 26 | Yellow output #01 |
| A 27 | Yellow output #02 |
| A 28 | Yellow output #03 |
| A 29 | Yellow output #04 |
| A 30 | Yellow output #05 |
| A 31 | Yellow output #06 |
| A 32 | Yellow output #07 |
| A 33 | Yellow output #08 |
| A 34 | 12V input from relay |
| B 1 | RPM signal input |
| B 2 | Magnetic RPM sensor reference |
| B 3 | Cam sync signal input |
| B 4 | Cam sync reference input |
| B 5 | White input #1 |
| B 6 | White input #2 |
| B 7 | White input #3 |
| B 8 | White input #4 |
| B 9 | White input #5 |
| B 10 | Battery negative input |
| B 11 | CAN A LOW |
| B 12 | CAN A HIGH |
| B 13 | White input #6 |
| B 14 | White input #7 |
| B 15 | White input #8 |
| B 16 | White input #9 |
| B 17 | White input #10 |
| B 18 | Power ground input |
| B 19 | Power ground input |
| B 20 | CAN B HIGH |
| B 21 | White input #11 |
| B 22 | White input #12 |
| B 23 | White input #13 |
| B 24 | White input #14 |
| B 25 | White input #15 |
| B 26 | 12V input from relay |
| B 27 | 5V outputs for sensors |
| B 28 | CAN B LOW |
| B 29 | Ground for sensors |
| B 30 | White input #16 |
| B 31 | White input #17 |
| B 32 | White input #18 |
| B 33 | White input #19 |
| B 34 | White input #20 |
| C 1 | 12V input from relay |
| C 2 | 12V input from relay |
| C 3 | 12V input from relay |
| C 4 | Gray output #09 |
| C 5 | Gray output #10 |
| C 6 | Gray output #11 |
| C 7 | Gray output #12 |
| C 8 | Yellow output #09 |
| C 9 | Yellow output #10 |
| C 10 | Yellow output #11 |
| C 11 | Yellow output #12 |
| C 12 | Yellow output #13 |
| C 13 | Yellow output #14 |
| C 14 | Yellow output #15 |
| C 15 | Yellow output #16 |
| C 16 | Yellow output #17 |
| C 17 | Yellow output #18 |
| C 18 | CAN C (+) |
| C 19 | CAN C (-) |
| C 20 | Yellow output #19 |
| C 21 | Yellow output #20 |
| C 22 | Yellow output #21 |
| C 23 | Yellow output #22 |
| C 24 | Battery negative input |
| C 25 | Battery negative input |
| C 26 | Battery negative input |
| D 1 | Input frequency channel #01 (signal) |
| D 2 | Input frequency channel #01 (reference) |
| D 3 | Input frequency channel #02 (signal) |
| D 4 | Input frequency channel #02 (reference) |
| D 5 | Input frequency channel #03 (signal) |
| D 6 | Input frequency channel #03 (reference) |
| D 7 | Input frequency channel #04 (signal) |
| D 8 | Input frequency channel #04 (reference) |
| D 9 | Input for high speed reading #01 |
| D 10 | Input for high speed reading #02 |
| D 11 | Input for high speed reading #03 |
| D 12 | Input for high speed reading #04 |
| D 13 | Input for high speed reading #05 |
| D 14 | Input for high speed reading #06 |
| D 15 | Input for high speed reading #07 |
| D 16 | Input for high speed reading #08 |
| D 17 | O2 sensor #1 Signal |
| D 18 | O2 sensor #1 Ground |
| D 19 | O2 sensor #1 IP |
| D 20 | O2 sensor #1 Resistor calibration |
| D 21 | O2 sensor #1 Heater negative |
| D 22 | O2 sensor #2 Signal |
| D 23 | O2 sensor #2 Ground |
| D 24 | O2 sensor #2 IP |
| D 25 | O2 sensor #2 Resistor calibration |
| D 26 | O2 sensor #2 Heater negative |
| M 6 | CAN D (+) |
| M 13 | CAN D (-) |
Other FuelTech ECUs
The closest FuelTech unit is the FuelTech FT600. Against it, this one has 12 ignition outputs (the FT600 has 8), 2 wideband controllers (the FT600 has 0), 4 CAN buses (the FT600 has 2) and 122 pins (the FT600 has 68).
Source: FuelTech document fueltech-ft700-electrical-diagram-en
Always verify against the manufacturer's manual and your tuner before wiring.