About
We read the firmware. Then we change what the car can do.
Hex and Boost is a small team in Lahore, Pakistan, that works on engine and gearbox computers at the level of their program code.
What makes this different from a remap
Most tuning changes the numbers the manufacturer left adjustable: fuel tables, timing tables, limiters. That is calibration, and it is useful work. It also has a ceiling. You can only adjust what the software was written to do.
We work one level down. We read the controller's program, work out what each part does, and write new functions into it. That is how a naturally aspirated Civic's computer came to manage a turbocharger and an electronic wastegate, and how a CVT without paddles came to have seven selectable steps.
How we got here
The work began with one car: a 9th-generation Honda Civic 1.8 automatic, turbocharged by its owner, that deserved better control than a spring and a piggyback could give it. Firmware builds started in September 2026. By mid-November the project had produced more than a hundred builds and 81 logged drives on the car.
That groundwork carried over to the Civic X CVT in days. For the Mitsubishi Pajero, which uses a different processor altogether, we started again from the read.
Who is behind it
Hex and Boost was started by Haris, who does the reverse engineering and writes the firmware. In Haris's own words on Instagram: "I write features into stock ECUs." The turbo Civic in our case studies is Haris's own car and the test bed for everything we build.
What we publish
We explain how engine computers work on Instagram at @hexandboost, and we write up our projects here as case studies with their real status and their limits. Manufacturer firmware and customer files stay private.
Where we are
We are based in Lahore, Pakistan. See contact for how to reach us.
Have a car the usual tools cannot touch?
Tell us the car, the engine, the gearbox and what you want it to do. We reply to every serious enquiry.