Link G4+ Monsoon pinout and specs

Checked against the maker's documents 27 September 2026

This unit reads almost the same as the Link G4+ Atom. The table below shows where they differ.

Link G4+ Monsoon is a 34-pin wire-in Link ECU on 1 connector: A (34 pins).

It has 4 injector outputs and 4 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. Wideband control needs an external controller, usually over CAN. The MAP sensor is built in.

The maker does not list drive-by-wire outputs. One CAN bus handles dashes, PDMs and expansion.

Spec sheet

Which builds it suits

Of the 58 swap presets in the planner, 0 fit as they are and 1 fits with add-ons; 57 do not fit at all. The add-on it asks for most often is the Link Razor PDM. Where it falls short, it is usually not enough injector output (low-side). The planner fills anything a preset leaves open with its ordinary defaults, so your own build may land differently.

The Mazda Rotary 13B-REW (FD RX-7) needs Link Razor PDM and Link CAN-Lambda. It can't run the Toyota 1JZ-GE VVT-i (coil pack): not enough injector output (low-side). It can't run the Ford Coyote 5.0 Gen2 (2015-17): not enough injector output (low-side). It can't run the Nissan SR20DET (S14): not enough knock inputs.

Plan a build around the Link G4+ Monsoon

Pin table

Connector A carries 4 injector outputs, 4 ignition outputs and 2 trigger inputs.

Other Link ECUs

The closest Link unit is the Link G4+ Atom. Against it, this one has 34 pins (the G4+ Atom has 29).

• Link G4+ Atom
• Link G4X MonsoonX
• Link G4X AtomX
• Link G4+ Force GDI

Source: Link document MonsoonQuickstartGuide

Always verify against the manufacturer's manual and your tuner before wiring.