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Link Storm G4X ECU standalone engine management system

Link G4X StormX EMS ECU Stand Alone Engine Management

WE HAVE PLUG AND PLAY APPLICATIONS AVAILABLE, SUCH AS 1UZ! Please contact us with your build and we can offer adapter harnesses

Please note free shipping is in the USA lower 48 states only. Please contact us with a shipping quote to your location if you are outside the USA or are in Hawaii/Alaska.

The Link G4X StormX ECU is the latest version of Link's trusty, mid-sized standalone ECU. With eight injector and eight ignition drives, it allows sequential injection and direct spark on engines with up to eight cylinders or four rotors. The StormX has all the upgrades of the AtomX and MonsoonX but offers more advanced tuning features like a built in Trigger Oscilloscope, Stepper Motor Idle Control, Rotary Oil Metering Pump Control, Onboard Knock Control, Open and Closed Loop Boost Control plus most Motorsport features including Full Gear Shift Control, Antilag and Launch Control. The StormX has expanded data logging and is more responsive with a higher bandwidth than its G4+ Storm predecessor. G4X features 512 megabytes of logging at 32bit using up to 250 channels, each limited to up to 1kHz per channel (by the Operating System), with a maximum of 100 kSamples/sec. It also features 8 x faster communications speed, allowing you to download logs 8 x faster and pushes all the logging quickly up to a new and improved PCLink.



8 x Digital inputs

3 x Temperature inputs

8 x Analog inputs

2 x Trigger Inputs

2 x Knock Inputs


8 x Injection drives

8 x Ignition drivers

8 x Auxiliary outputs^

+5V Sensor power supply

+8V Sensor power supply

(unused fuel and ignition drives can be used as additional Aux outputs)


1 x CAN bus

1 x USB tuning connection


Dimensions: 185mm (L) x 130mm (W) x 40mm (H) (without looms)

Mass: 660 grams

Advanced features not found on the Atom or Monsoon:

Built in trigger oscilloscope.

Onboard Knock Control – support for two knock sensors wired directly to the ECU.  No external amplifier required.

Boost control can be open or closed loop with up to three switchable tables.

Idle valve solenoid or stepper motor control.

Rotary oil metering pump control.

Most Motorsport features including full gear shift control, antilag and launch control

Up to 4 fully variable closed loop VVT cams. (up from 2)

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  • $1,595
Free shipping
    • SKU
  • Link External MAP Sensor
    No thanks, Yes, 5 bar 1/8 NPT, 101-0071, Yes, 4 bar, 101-0165, Yes, 2.5 bar, 101-0163, Yes, 3 bar, 101-0164
  • Link IAT Sensor
    No, Yes + steel weld boss 101-0045 + 47, Yes + aluminum weld boss 101-0045 + 46, Yes, 101-0045
  • Link Ethanol Sensor
    Yes, with -6 AN fitting 101-0034, No
  • Link Oil/Fuel 10 bar Pressure Sensor
    Add both!!, Add one please! 101-0080, No
  • Link Coolant Temp Sensor
    Yes, 101-0076, No
  • Link Boost Control Solenoid
    Yes, 4 port 4BCS, Yes, 3 port 3BCS, No
  • Connector/Pigtail Unterminated Wiring Looms A+B
    None, A+B Short Looms (1.3 feet), A+B Medium Looms (2.5 meters), A+B Long Looms (5 meters)
  • Safety & Compliance
    • Prop 65 Yes/No

Most product ships from either the manufacture or largest wholesale location to pass the saving to you. Most orders will ship via UPS, as we will be able to provide the best rates and have had the least issues when using UPS.

IF YOU DO NOT LIKE THE AUTOMATED SHIPPING CALCULATOR'S RATES, PLEASE CONTACT US AND WE CAN GET YOU A BETTER ONE! Especially for anyone outside the USA, please contact us with a list of parts you'd like to order, and where you are located.

We accept the following payment methods:

Also Venmo and unmarked nonsequential dollar bills

  • Fitment Type
    Vehicle Specific
Toyota/LexusLexus LS/Celsior1998-2000 UCF20/21 LS400/Celsior1UZ-FE VVTi 4.0 V8
Toyota/LexusLexus LS/Celsior1995-1997 UCF20/21 LS400/Celsior1UZ-FE 4.0 V8 non-VVTi
Toyota/LexusLexus LS/Celsior2001-2005 UCF30 LS430/Celsior3UZ-FE 4.3 V8
Toyota/LexusLexus GS/Aristo1998-2005 S1601UZ VVTi 4.0 V8 (1998-2000) UZS160
Toyota/LexusLexus GS/Aristo1998-2005 S1603UZ 4.3 V8 (2001-2005) UZS161
Toyota/LexusCrown Majesta1995-1999 S1501UZ-FE 4.0 V8 (UZS151, UZS155, UZS157)
Toyota/LexusLexus SC/Soarer1992-2000 Z301UZ-FE non-VVTi 4.0 V8 (92-97) UZZ30/31/32
Toyota/LexusLexus SC/Soarer1992-2000 Z301UZ-FE VVTi 4.0 V8 UZZ30 (1998-2000)
Toyota/LexusTundra2007-2021 2nd Gen2UZ-FE 4.7 V8

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