Advanced features of the XtremeX ECU: 

• Fully programmable E-throttle control complete with capability of gear shift throttle blip and antilag.
• Cruise control.
• Two independent CAN modules.
• 30 general purpose tables (up from 20)
• All Motorsport features including full gear shift control, cruise control, traction control, antilag and launch control.
• Advanced closed loop lambda strategy and dual bank lambda control.

The terminated harness has the following features:

Provides spare IO via a “Spares” connector — extra capacity for sensors, switches, or custom additions.

With the addition of the fusebox, this package Includes main chassis “flying leads” (un‐terminated wires) for essential power and control, including:

Large red “Batt+” wire (for ECU main power) 

Red-Green “Fan” wire (ECU-controlled +12V to cooling fan), rated 20A continuous 

Red-Blue “Fuel Pump” wire (ECU-controlled +12V), 20A continuous 

Grey-Black “Ign Sw” wire (to ignition switch) 

°Equipped with sealed JPT terminals in the chassis connector (TE Connectivity JPT family), with mating connector specs provided. 

°The harness includes multiple dedicated connectors for key components, such as:

°Pedal connector (for DBW pedal): 5V, sensor ground, two analog voltage inputs 

°CAN2 connector: for CAN devices like lambda modules, displays, keypads, etc. 

°MAP connector: compatible with Link MAP sensors; adapter available for factory LS MAP sensors 

°Knock sensor connector: supports up to two knock sensors, with adapters available for Gen 3 or Gen 4 factory sensors 

°Alternator connector: for “F Body” alternators; provides exciter/lamp wire to terminal B 

• Transmission (“Trans”) connector: for reverse switch, DI, or other functions needing cabin signal 
• IAC connector: for 4-wire stepper IAC; if no IAC is used, those channels may be used for other functions (boost valve, NOS, etc.)
• TPS connector: for cable-throttle sensors; if using DBW, may be repurposed
• DBW (electronic throttle) connector: for DBW bodies, providing analog inputs, 5V, sensor ground; may be repurposed in cable-throttle engines

Bundle Includes:

• G4X XtremeX ECU (8 x Injector and 8 x Ignition Drives) - 109-4000
• Terminated Engine Harness GM LS GEN3/4* - 101-0300
• LS drive-By-Wire Adapter Loom - 101-0304
• LS Gen4 Knock Adapter Loom - 101-0306
• LS Gen4 MAP Adapter Harness - 101-0308
• LS Cam Sensor Adapter Harness - 101-0307
• 8 x Bosch Male to Female Adapters - 101-0287
• LS Fuse Box & Relay - 101-0310