The G4X EVOLink (IV-VIII) ECU has two jumper pins which need to be set.

 

Intercooler spray jumper

The location of the intercooler spray relay pin changed between models. Set the provided jumper in the correct location for your model.

EVO8_IC Spray Jumpers

 

Catalyctic Converter jumper

Pin 40 on the factory EVOLink (IV-VIII) ECU is either catalyctic converter light or signal ground depending on model. If the catalyctic converter lamp no longer works after fitting the G4X EVOLink (IV-VIII) ECU remove the jumper that bridges the two pins.