Link G4+ Kurofune is a 72-pin wire-in Link ECU on 4 connectors: A (22 pins), B (16 pins), C (26 pins) and XS (8 pins).
It has 8 injector outputs and 8 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. Two knock inputs cover both banks of a V engine. Wideband control needs an external controller, usually over CAN.
The maker does not list drive-by-wire outputs. One CAN bus handles dashes, PDMs and expansion. Four outputs can switch 12V as well as ground.
Spec sheet
| Connectors | A (22), B (16), C (26), XS (8)72 pins in this profile |
|---|---|
| Injector outputs | 8saturated (high-impedance only) |
| Ignition outputs | 8logic-level: smart coils, or an igniter for dumb coils |
| Dedicated trigger inputs | 2VR or Hall |
| Knock inputs | 2 |
| Onboard wideband controllers | 0 |
| Onboard MAP sensor | Not listed by the maker |
| CAN buses | 1 |
| Drive-by-wire | Not stated by the maker |
| High-side outputs | 4 |
| Half-bridge outputs | 0 |
| 5V sensor supply | 1 pin |
Which builds it suits
Of the 58 swap presets in the planner, 0 fit as they are and 27 fit with add-ons; 31 do not fit at all. The add-on it asks for most often is the Link CAN-Lambda. Where it falls short, it is usually not enough drive-by-wire throttle motor (h-bridge). The planner fills anything a preset leaves open with its ordinary defaults, so your own build may land differently.
The Toyota 2JZ-GE distributor (NA, early) needs Link CAN-Lambda and an external igniter. The Nissan RB26DETT (R32/R33, dumb coils) needs Link CAN-Lambda and an external igniter. It can't run the Ford Coyote 5.0 Gen1 (2011-14): not enough drive-by-wire throttle motor (h-bridge). It can't run the Nissan VQ35HR (High-Rev, 2007+): not enough drive-by-wire throttle motor (h-bridge).
Fits with add-ons 27
- Toyota 1JZ-GE distributor (NA, early) with Link CAN-Lambda, an external igniter
- Toyota 1JZ-GE VVT-i (coil pack) with Link CAN-Lambda, an external igniter
- Toyota 1JZ-GTE non-VVTi with Link CAN-Lambda, an external igniter
- Toyota 1JZ-GTE VVTi with Link CAN-Lambda, an external igniter
- Toyota 2JZ-GE distributor (NA, early) with Link CAN-Lambda, an external igniter
- Toyota 2JZ-GE VVT-i (coil pack) with Link CAN-Lambda, an external igniter
- Toyota 2JZ-GTE non-VVTi with Link CAN-Lambda, an external igniter
- GM LS1 (Gen3 5.7 alum) with Link CAN-Lambda
- GM LS6 (Gen3 5.7 alum) with Link CAN-Lambda
- GM LS LQ4/LQ9 (Gen3 6.0 iron) with Link CAN-Lambda
- Ford Modular 4.6 2V (SOHC) with Link CAN-Lambda, an external igniter
- Ford Modular 4.6 4V Cobra (NA, cable) with Link CAN-Lambda, an external igniter
- Ford Modular 4.6 4V Terminator (S/C, cable) with Link CAN-Lambda, an external igniter
- Ford Modular 5.4 4V Ford GT (S/C, cable) with Link CAN-Lambda, an external igniter
- Nissan RB20DET with Link CAN-Lambda, an external igniter
- Nissan RB25DET non-Neo S1 (R33, dumb coils) with Link CAN-Lambda, an external igniter
- Nissan RB25DET non-Neo S2 (R33, smart coils) with Link CAN-Lambda
- Nissan RB25DET Neo (R34) with Link CAN-Lambda
- Nissan RB26DETT (R32/R33, dumb coils) with Link CAN-Lambda, an external igniter
- Nissan RB26DETT (R34, smart coils) with Link CAN-Lambda
- Nissan SR20DET (S13) with Link CAN-Lambda, an external igniter
- Nissan SR20DET (S14) with Link CAN-Lambda, an external igniter
- Nissan SR20DET (S15) with Link CAN-Lambda
- Subaru EJ/FA EJ20 turbo single-AVCS (EJ207 v7-9) with Link CAN-Lambda
- Subaru EJ/FA EJ20 turbo dual-AVCS (EJ207 GRB 2008+) with Link CAN-Lambda
- Mazda Rotary 13B-REW (FD RX-7) with Link Razor PDM, Link CAN-Lambda
- Mazda Rotary 20B (Eunos Cosmo 3-rotor) with Link Razor PDM, Link CAN-Lambda
Does not fit 31
- Toyota 2JZ-GTE VVTi not enough drive-by-wire throttle motor (h-bridge)
- GM LS2 (Gen4 6.0 alum) not enough drive-by-wire throttle motor (h-bridge)
- GM LS3 (Gen4 6.2 alum, car) not enough drive-by-wire throttle motor (h-bridge)
- GM LS L76 (Gen4 6.0 alum) not enough drive-by-wire throttle motor (h-bridge)
- GM LS L92 (Gen4 6.2 alum) not enough drive-by-wire throttle motor (h-bridge)
- GM LS LY6/L96 (Gen4 6.0 iron) not enough drive-by-wire throttle motor (h-bridge)
- GM LSA (Gen4 6.2 alum, S/C) not enough drive-by-wire throttle motor (h-bridge)
- GM LT1 (Gen5 6.2 alum) not enough drive-by-wire throttle motor (h-bridge)
- GM LT4 (Gen5 6.2 alum, S/C) not enough drive-by-wire throttle motor (h-bridge)
- Ford Coyote 5.0 Gen1 (2011-14) not enough drive-by-wire throttle motor (h-bridge)
- Ford Coyote 5.0 Gen2 (2015-17) not enough drive-by-wire throttle motor (h-bridge)
- Ford Coyote 5.0 Gen3 (2018-23) not enough drive-by-wire throttle motor (h-bridge)
- Ford Modular 5.4 4V GT500 (S/C, DBW) not enough drive-by-wire throttle motor (h-bridge)
- Ford Coyote Voodoo 5.2 (GT350, flat-plane) not enough drive-by-wire throttle motor (h-bridge)
- Ford Coyote Predator 5.2 (GT500, cross-plane, S/C) not enough drive-by-wire throttle motor (h-bridge)
- Ford Barra 4.0 NA (182/190/195) not enough drive-by-wire throttle motor (h-bridge)
- Ford Barra 4.0 Turbo (240T/245T/270T/310T/325T) not enough drive-by-wire throttle motor (h-bridge)
- Nissan VR38DETT (R35 GT-R) not enough drive-by-wire throttle motor (h-bridge)
- Nissan VQ35DE (base, 2003-04) not enough drive-by-wire throttle motor (h-bridge)
- Nissan VQ35DE Rev-Up (2005-06) not enough drive-by-wire throttle motor (h-bridge)
- Nissan VQ35HR (High-Rev, 2007+) not enough drive-by-wire throttle motor (h-bridge)
- Honda K20 (i-VTEC 2.0 NA) not enough drive-by-wire throttle motor (h-bridge)
- Honda K24 (i-VTEC 2.4 NA) not enough drive-by-wire throttle motor (h-bridge)
- Subaru EJ/FA EJ25 turbo single-AVCS (EJ257 2004-07) not enough drive-by-wire throttle motor (h-bridge)
- Subaru EJ/FA EJ25 turbo dual-AVCS (EJ257 2008+) not enough drive-by-wire throttle motor (h-bridge)
- Subaru EJ/FA FA20D (BRZ/86 NA) not enough drive-by-wire throttle motor (h-bridge)
- Subaru EJ/FA FA20DIT (WRX turbo 2015+) not enough drive-by-wire throttle motor (h-bridge)
- Mazda Rotary 13B-MSP Renesis (RX-8 manual, 6-injector) not enough drive-by-wire throttle motor (h-bridge)
- Mazda Rotary 13B-MSP Renesis (RX-8 auto, 4-injector) not enough drive-by-wire throttle motor (h-bridge)
- BMW S54 (3.2 NA I6, E46 M3) not enough knock inputs
- BMW N54 (3.0 twin-turbo I6) not enough drive-by-wire throttle motor (h-bridge)
Plan a build around the Link G4+ Kurofune
Pin table
By connector: A carries 4 injector outputs, 2 trigger inputs and 6 analog inputs; B carries 6 ignition outputs, 2 analog inputs and 4 digital inputs; C carries 4 injector outputs, 2 ignition outputs and 2 analog inputs; XS carries 2 knock inputs, 2 analog inputs and 1 digital input.
Show all 72 pins
| Pin | Function |
|---|---|
| A 1 | Inj 1 |
| A 2 | Inj 2 |
| A 3 | GND |
| A 4 | GND |
| A 5 | GND |
| A 6 | Trigger 2 - |
| A 7 | DI 2 |
| A 8 | Trigger 1 - |
| A 9 | An Volt 5 |
| A 10 | GND |
| A 11 | GND |
| A 12 | Inj 5 |
| A 13 | Inj 6 |
| A 14 | An Volt 6 |
| A 15 | An Volt 7 |
| A 16 | An Volt 8 |
| A 17 | Trigger 2 + |
| A 18 | DI 1 |
| A 19 | Trigger 1 + |
| A 20 | An Volt 4 |
| A 21 | An Volt 3 |
| A 22 | GND |
| B 23 | An Volt 2 |
| B 24 | An Volt 1 |
| B 25 | DI 3 |
| B 26 | DI 4 |
| B 27 | DI 5 |
| B 28 | DI 6 |
| B 29 | Aux 7 |
| B 30 | Aux 5 |
| B 31 | Ign 1 |
| B 32 | Ign 2 |
| B 33 | Ign 3 |
| B 34 | Ign 4 |
| B 35 | Ign 5 |
| B 36 | Ign 6 |
| B 37 | Aux 8 |
| B 38 | Aux 6 |
| C 39 | An Temp 2 |
| C 40 | +5V Out |
| C 41 | Aux 1 |
| C 42 | Aux 2 |
| C 43 | An Out 3 |
| C 44 | An Out 4 |
| C 45 | Ign 8 |
| C 46 | Ign 7 |
| C 47 | Aux 9 |
| C 48 | Aux 10 |
| C 49 | +14V |
| C 50 | Inj 3 |
| C 51 | Inj 4 |
| C 52 | An Temp 1 |
| C 53 | +14V Batt |
| C 54 | Aux 3 |
| C 55 | Aux 4 |
| C 56 | An Out 1 |
| C 57 | An Out 2 |
| C 58 | DI 9 |
| C 59 | DI K |
| C 60 | DI 8 |
| C 61 | DI 7 |
| C 62 | +14V |
| C 63 | Inj 7 |
| C 64 | Inj 8 |
| XS 1 | GND |
| XS 2 | CAN1 L |
| XS 3 | CAN1 H |
| XS 4 | DI 10 |
| XS 5 | An Temp 3 |
| XS 6 | An Volt 9 |
| XS 7 | Knock 1 |
| XS 8 | Knock 2 |
Other Link ECUs
The closest Link unit is the Link G4X StormX. Against it, this one has 72 pins (the G4X StormX has 60).
Source: Link document KurofuneQuickstartGuide
Always verify against the manufacturer's manual and your tuner before wiring.