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Link ECU

Link G4X Plugin ECU WRXLink (04) WRX104X - SKU 224-4000

Link G4X Plugin ECU WRXLink (04) WRX104X - SKU 224-4000

Regular price $2,325.00 USD
Regular price Sale price $2,325.00 USD
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Easy to install. Affordable. Reliable.

The Link G4X PlugIn ECU transforms your WRX into a precision-tuned performance machine. Enjoy the latest in engine management technology, fitted directly into your OEM enclosure with no loom modifications required.


Choose the Right Model – Pin Check Required!

The fastest and most reliable way to confirm you need the WRX104X is to check pins A1–A3 on the OEM connector:

  • Pins A1–A3 have wires → You need the WRX104X (this listing, 224-4000)
  • Pins A1–A3 are empty → You need the WRX107X.

WRX104X mostly covers 2004–2006; some late-2006 cars require the WRX107X, so this check is essential.


Vehicle Compatibility

  • Designed for WRX V10 EJ25 (2.5L) 2004–2007
  • Manual transmission only
  • Suits GD/GG chassis with electronic throttle
  • Not suitable for GR/GH/GE/GV hatchback or 3rd generation WRX

Model breakdown:
WRX104X → Mostly covers 2004–2006  
WRX107X → Mostly covers 2007 and some late 2006

 

Why Choose Link G4X?

  • Factory fit, motorsport power – installs in the OEM case with world-class tuning flexibility.
  • Plug & play – no wiring loom alterations for supported models.
  • Confidence & reliability – proven hardware and software, trusted by tuners worldwide.
  • Serious features – advanced boost control, antilag, launch, knock control & more.

G4X PlugIn Key Features (where applicable):
Up to 6D fuel and ignition mapping
Precision closed loop cam control (four cam, independent control)
Sequential fuel delivery
Digital triggering, all OEM patterns
OEM idle hardware supported
5D boost control with three switchable tables
Motorsport features - antilag, launch, flat shift
Continuous barometric correction (on board)
CAN port
QuickTune - automated fuel tuning
Individual cylinder correction
USB tuning cable included
Stats recording into on-board memory
Gear compensations for spark, boost and fuel
Real time selectable dual fuel, ignition and boost maps
Sync and crank sensors can be a combination of Hall effect, variable reluctance or optical
Boost control referenced to gear, speed or throttle position
512 mega bytes data logging memory within data storage unit
Staged injection
Knock with "windowing"

There are two different options for the expansion connectors, depending on whether your ECU is the 2004-2006 ECU or the 2006-2007 ECU. 

2004-2006 ECU 
The following expansion connector inputs/outputs are provided: 
Blank                AN Volt 11 
An Temp 4        Temperature sensor input 
Blank                No function 
Blank                AN Volt 12 
Blank                No function 
Blank                No function 
+5V Out        Low Current +5V Supply 
Gnd                Sensor Ground Only 


2006-2007 ECU 
The 2006-2007 V10 ECU contains an 8 pin expansion connector. 
The following expansion connector inputs/outputs are provided: 
Aux 11                Auxiliary Output 
An Temp 4        Temperature sensor input 
Aux 12                Auxiliary Output 
Volt 11                Analog 0-5V input 
Aux 13                Auxiliary Output 
DI 11                Digital Input 
+5V Out        Low Current +5V Supply 
Gnd                Sensor Ground Only  

View full details

Customer Reviews

Overall rating: 5 / 5 from 691 reviews.

Customer photo review of Link G4X Plugin ECU WRX V11 EJ20/EJ25 Turbo - SKU 238-4000

Hands down the best automotive parts customer service. Wasn't paying attention and ordered the wrong ECU for my vehicle and was able to get the proper one ordered with a simple phone call that took 2 minutes. Was informed that it would be a few weeks out but was able to get it in about a week and half. Will definitely be ordering a dash and kit when the time comes.

Link G4X Plugin ECU WRX V11 EJ20/EJ25 Turbo - SKU 238-4000

Customer photo review of Toyota Hilux / 4Runner 84-88 N50 N60 N70 Dash Mount

very well made, fit without any modifications to any of the related components. Well worth every dime!! The only thing that could make it any better , would be to include some clips and screws for the two top mounting tabs for installation. factory screws worked for the two lower mounting tabs, but I had to source some speed clips and appropriate length screws to complete the installation. As you can see, the aftermarket gauges fit beautifully into the panel, and should be a great upgrade from the factory set up for the 5.3 LS conversion I'm doing on my 1988 Toyota 4-Runner. Thank you for such a great product, and for the really fast shipping!!! I'll be sharing these results on some Facebook groups that are following my build. I'm sure there are going to be some follower interested in your products.

Toyota Hilux / 4Runner 84-88 N50 N60 N70 Dash Mount

Customer photo review of BMW E30 Dash Mount

I purchased an E30 instrument cluster mount from Mako motorsport for the uC-10 digital dash. When I received the item initially the quality of the product surprised me. I didn't expect it to look so good. The test fit in the dash was perfect and when the digital instrument cluster from Haltech was installed, it was breathtaking. Well done. Mako motorsport.

BMW E30 Dash Mount

Customer photo review of Subaru Impreza WRX STI 08-14 and Forester 08-13 Dash Mount

Finally, a mounting solution that positions the screen exactly where it needs to be. The recessed design keeps the display at a perfect viewing angle through the steering wheel and doesn't sit too high. Installation was straightforward and the build quality is solid. Perfect for anyone running a Nexus or Elite setup who wants a seamless install.

Subaru Impreza WRX STI 08-14 and Forester 08-13 Dash Mount

Customer photo review of BMW E30 Dash Mount

Item looks great and fits great in the vehicle!

BMW E30 Dash Mount

Customer photo review of Toyota MR2 SW20 Dash Mount

This is my second dash I've bought from mako, just upgraded to a Haltech so I had to get another! They aren't cheap but the quality and fit is second to none, absolutely love it

Toyota MR2 SW20 Dash Mount

Customer photo review of Nissan Skyline R34 MFD Dash Mount

شكراً على سرعه الاستجابة وانه افظل منج تم تصنيعه بديل لشاشة gtr34

Nissan Skyline R34 MFD Dash Mount

Customer photo review of $200USD OFF Haltech uC-10 Display and Mako Dash Mount Combo

Sadly Haltech was short inventory during my order time - however very happy with the product between my uc10 dash and the seamless integration with the Mako Motorsport cluster mount for it in my GC8 STi looks great! Highly recommended which led to my purchase and I'm now recommending the same to others! High quality; looking forward to my car running under its own power to truly be able to use this!

$200USD OFF Haltech uC-10 Display and Mako Dash Mount Combo

Customer photo review of BMW E36 Dash Mount

Fit in the e36 M3 dash was excellent and makes a nice mounting place for the AiM MXP. Side button (can be an issue on some other brand mounts) are easy to access.

BMW E36 Dash Mount

Customer photo review of Toyota Tacoma 1st Gen 94-04 Dash Mount

Came out amazing, they built me exactly what I asked for in the dash. I did have to cut behind the bezel to have it all fit but nothing that matter and everything fit perfectly. This is my 5 bezel from them and I will be ordering more.

Toyota Tacoma 1st Gen 94-04 Dash Mount