LinkECU G4X PNP CIVICLink - K20X ecumaster sensors and a factory-fit mounting design

and a factory-fit mounting design

but given the nature of the use of this part we cannot guarantee it will never fail

and other Gen4 LS engines

This is the biggest and baddest ECU in the Link lineup

2003–2007 Chevrolet Silverado SS & H/O Edition

LinkECU G4X PNP CIVICLink - K20X ecumaster sensors and a factory-fit mounting designG4X PlugIn ECUs offer the latest in engine management technology, designed to easily maximize the potential from your car. This ECU fits inside the factory OEM enclosure. Installation is a breeze, with no alteration of the factory wiring loom required for the models listed below. This will bring your build up to modern engine control standards, with all the features of a Link G4X storm under the hood. Including datalogging, motorsport control