Evo X / RA - SST TCU Firmware Upgrade

Custom TCU firmware that unlocks the full potential of your Evo X or Ralliart SST gearbox — and it flashes on in about five minutes. This isn't a generic, off-the-shelf tune: we take your requirements, gearbox configuration and driving style, and build a TCU calibration to match, whether that's drag, rally, sprints or daily driving. A flash can include fully custom shift points, increased or decreased clutch pressures to suit your build, instant SSport/Sport/Normal switching at any speed, a customisable (or removable) launch-control limiter to pair with a spark-cut or Tephra V3 launch, and SSport mode unlocked on Ralliart vehicles. It's built on Mitsubishi's B151 firmware and flashed with Mitsubishi-style tools, so it integrates cleanly with the factory system. Available as a download if you can flash it yourself, or flashed in person in Wellington, New Zealand. XSpec offers custom TCU Firmware - curated to your needs. This is not a generic off-the-shelf flash, we take your requirements, gearbox configuration, driving style, and curate a custom-created SST flash to match.

This includes:

• Custom user-configurable shift points (see Shift Configuration)
• Increased/decreased pressures based on your gearbox build.
• Instant SSport/Sport/Normal switching, regardless of drive speed.
• Customisable Launch Control characteristics, including custom clutch engagement, launch rpm, and throttle gates.
• SSport mode for Ralliart vehicles.

Available via. download link if you have flashing capabilities, or can be flashed locally in Wellington NZ.

Safety:

The upgraded firmware is a modified version of Mitsubishi's B151 firmware and is flashed on using Mitsubishi style tools. All files are pre-compiled and validated to ensure they are safe to flash.