
Link ECU · ECU
Link ECU G4X MonsoonX Standalone Wire-In ECU
Includes taxes, duties, and fees globally.
Or 3 interest-free payments of £319.66
★★★★★ Verified
“Ordered at 9am, received at 9am the following day. A company that do as they say, and actually deliver in 24hrs.”
James, verified customer, Jan 2025
Check it fits before you buy
Send us your chassis code and we will confirm before you spend anything.
Ships today
In-stock parts ordered before 1pm are dispatched the same day.
We all get it wrong sometimes
Nobody is perfect. You can order the wrong thing and so can we. Whatever the issue, we put it right fast. Unsure? Email us and we will check the specs against your car.
We build these cars
Our team build and race in the motorsport and tuning scene, and our founder competes in pro drift in his own E46.
Full details
Link G4X MonsoonX Engine Management
4x Fuel 4x Ignition / 7 bar MAP
Link G4X MonsoonX Engine Management ECU
The MonsoonX has been upgraded to provide 512 megabytes of data logging, meaning you can log much more data at a faster sample rate. Control loops are also more precise compared to its G4+ predecessor, along with advancements such as single precision floating point format fuel tables, better resolution within ignition timing and faster communications. These upgrades make the G4X Monsoon a true powerhouse in a small shell.
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.
With the MonsoonX you have all the tuning capabilities of the AtomX, but you can also choose to run some of the following features: Launch Control, Anti-lag, VVT Control and Closed Loop Boost Control. It also comes with a built in 4 bar or 7 bar MAP sensor further reducing installation cost. Now featuring Knock Control.
The MonsoonX will control up to 2 rotors or 4 cylinders with sequential injection and direct spark. Or, it can be used for up to eight cylinders using batch fire.
This makes it ideal for naturally aspirated or turbocharged engines that just need a retune and one or two extra features, so you don’t need to jump up to one of our higher-level ECUs.
Requires A Loom
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The MonsoonX is ideal for:
1-12 Cylinder Distributed
2-8 Cylinder Wasted Spark
1-4 Cylinder Direct Spark
Odd Fire Engines
2-Stroke Engines
Configurable Firing Order
Configurable TDC Points (for odd fire)
Inputs
4 x Digital inputs
2 x Temperature inputs
4 x Analog inputs
2 x Trigger inputs
1 x Knock Input (Shared with DI4)
1 x Onboard 4 Bar MAP sensor
Outputs
4 x Injector drives
4 x Ignition drivers
6 x Auxiliary outputs^
+5V Sensor power supply
^unused ignition drives can be used as additional Aux outputs
Communications
1x CAN bus
1x USB tuning connection
Upgraded communications chip (four times faster than G4+)
Physical:
Dimensions: 95mm(L) x 130mm(W) x 45mm(H) (without loom)
Weight: 220 grams
Advanced features not found on the AtomX:
Antilag, rolling antilag and launch control.
Up to 2 fully variable closed loop VVT cams.
Misc:
512MB of logging memory
20 general purpose tables
Runs on PC Link software for G4X
What's in the box?
The MonsoonX comes supplied with waterproof connectors, a mounting bracket and a USB tuning cable.
Help
- Compare ECU
- Access wiring diagram (Link G4X MonsoonX Quick start guide)
- Download PC-Link Software (Free)
- Fault codes
- Technical Help
Telephone: +46 33281900 - 10:00-14:00 UTC +1 (English, Norwegian, Danish and Swedish)
Mail: info@speeding.nu - 24/7
Urgent 24/7 telephone here. (Please read the support pages first) - DIY documentation
When downloading PC-Link software, comprehensive help manuals are available. - The Link community / forum

Who you are buying from
You are buying from a drift team, not a warehouse.
Our founder competes himself in his own drift E46. Our team build and race the same platforms you drive and work on, and our sponsored drivers chase championships on the same parts we sell worldwide.
01
We have already broken it for you.
Our founder, a full team of sponsored drivers, and hundreds of other drivers worldwide are out competing on this stuff in drift and rally. When we tell you a part is good, the part is good. It has already been put to the test.
Verified customer
“After trying a few better known brands such as Tilton and Extreme, and never being super happy... Conor was able to recommend me the perfect clutch for my application... I havn't broken any drivetrain parts since I installed it.”
Connell O'Kane, 2JZ drift car, 27 Jul 2024
02
Tell us the car. We will spec it.
Chassis codes, spring rates, angle kit clearances, clutch ratings. Send us the car and what you want it to do. The answer comes from someone who has run that setup, not someone reading a product sheet.
Verified customer
“Conor is a top man very helpful and always replies to any questions you have about his products.”
Ryan, 12 Jan 2025
03
Ordered before 1pm, fitted this weekend.
In-stock parts ordered before 1pm are dispatched the same day. UK and Ireland typically arrive next morning, worldwide as quick as three days. Times do vary, but that can mean the part is on the car within a few days and she is back out blasting the roads by the weekend.
Verified customer
“Ordered at 9am received at 9am the following day! A company that do as they say, provide great parts at great prices and actually deliver in 24hrs.”
James, 14 Jan 2025
04
The price you see is the price you pay.
Duty and taxes are pre-paid, so there is no customs bill waiting at your door. What the checkout says is what it costs, wherever you are.
Verified customer
“CDM is a shop that does international shipping swiftly, with clear communication along the way. The part(s) also arrived unscathed, properly packaged, and as described.”
Brandon Somerville, 13 May 2025
Straight answers
The questions you were about to open a chat about.
How do I know it will fit my car?
Send us your chassis code or your reg in the chat and we will confirm before you spend anything. If you order and it turns out to be the wrong part, we swap it.
“Had a mix up with the item description (order wrong part) they was quick to email me and see what part I was meant to order and substituted it for no extra cost!”
Bradley Page, verified customer, 31 Jan 2025
When will it actually arrive?
In stock and ordered before 1pm, it leaves the same day. UK and Ireland is usually next day, occasionally 1 to 3 days. Europe 1 to 5 days, rest of world 3 to 5 days on express.
If something is not in stock, we will email you right away with an ETA and any available substitutes. On the rare occasion it does not work out, we will happily refund your order.
Will I get stung for customs or import VAT?
No. The price you pay on our website is what it will cost to be delivered to your door. You will not receive any surprise surcharges after ordering.
What if I change my mind?
30 days on all stock items, full refund on the parts. If you ordered the wrong thing we will help you get to the right one for as little money as possible. We have been there.
What warranty do I get?
Everything on our website is covered by the standard manufacturer's warranty.
If you ever need to claim, we fight your corner. We will do everything in our power to make sure you are looked after, rather than leaving you to argue with a manufacturer on your own.
Can I pay it off over a few months?
Yes. Klarna and Shop Pay Finance are both at checkout, so you can spread it without putting the build on hold.
Can I just ask someone what to buy?
That is the bit we are actually good at. We run our own race team and workshop, so you are talking to someone who has fitted it, broken it, and fitted it again. Hit the chat and tell us what the car is doing and what you want it to do.