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Ignitions and Electrical› Computers, Chips, Modules and Programmers

Link Engine Management

G4X XtremeX ECU

Name: G4X XtremeX ECU
Brand: Link Engine Management
SKU: 109-4000

$2,195.00 $2,022.69 Save $172.31

SKU: 109-4000

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Overview

The Link G4X XtremeX ECU is a premium engine control unit designed for professional motorsport and demanding road car applications. It features 8 injector drives and 8 ignition drives, capable of controlling up to 4 rotors or 8 cylinders with sequential injection and direct spark. The XtremeX includes built-in E-throttle and advanced features such as Anti-lag, Cruise Control, and Traction Control.

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The Link G4X XtremeX ECU is a top-tier engine management system offering advanced capabilities for professional motorsport and high-performance street vehicles. With 8 injector and 8 ignition drives, it supports complex engine configurations, including up to 4 rotors or 8 cylinders with sequential injection and direct spark. This ECU boasts extensive input and output capabilities, featuring 11 analog inputs, 8/10* digital inputs, 4 temperature inputs, 2 trigger inputs, and 2 knock inputs. On the output side, it provides 8 injection drives, 8 ignition drivers, and 10 auxiliary outputs. Communication is handled via 2* CAN bus connections, a serial (RS232) connection, and a USB tuning connection, offering faster communication than previous G4+ models. It also includes 512 Megabytes of data logging capacity. Advanced features differentiate the XtremeX, including fully programmable E-throttle control with gear shift throttle blip and antilag, cruise control, and two independent CAN modules. It supports all motorsport features such as full gear shift control, traction control, and launch control, alongside advanced closed-loop lambda strategy and dual-bank lambda control. The unit includes a USB tuning cable and mounting bracket in the box. Installation requires "A" & "B" looms or "A" & "B" connector kits, which are sold separately. For peak & hold functionality, a separate G4+ Xtreme ECU is recommended.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

Brand	Link Engine Management
Part Number	109-4000
Category	Ignitions and Electrical

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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