Support
Everything you need to install, tune and maintain your SpeedTech ECU.

Manuals & datasheets
User manual, datasheets and pinout diagrams for every ECU.
See manuals
Drivers & software
The CH340G USB driver and the official TunerStudio download, step by step.
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Warranty
1 year against manufacturing defects. Find out how to file a claim.
See warranty
Technical advice
Talk to our team on WhatsApp about installation or tuning questions.
Open WhatsApp
Dealers
Find an authorized shop to install your ECU.
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Contact
Write to us with any other question.
Get in touchCommon questions
Got another question? Message us and we'll reply within minutes.
What is a programmable ECU?
It's the computer that controls your engine's fuel injection and ignition. With a SpeedTech ECU you tune fuel, timing, cold start, rev limits and more to get the most out of your build.
What software is used to tune SpeedTech ECUs?
With TunerStudio, the world's most widely used tuning software. We help you install the drivers and with the initial setup.
Which ECU is right for my engine?
It depends on the cylinder count, the injection type and whether you want a display. The ST Mini suits compact 1–6 cylinder builds, the ST-04 goes up to 8 and the ST-100 has a 5" touchscreen. Message us on WhatsApp for free advice.
Do you ship outside Costa Rica?
Yes, worldwide. ECUs ship free: within Costa Rica by Correos de Costa Rica, and to all of the Americas, Europe and the rest of the world by DHL Express. Supplies and merch ship free alongside an ECU; ordered on their own, they pay their zone's shipping. You can also buy from an authorized dealer.
What warranty do your products have?
1 year against manufacturing defects from the purchase date, plus direct technical support from our engineers.








