Did your tuner leave the ROM unlocked? If they did that and you purchased RaceROM, you can enable launch control features. Navigate to Maps by Function > RaceROM Special Features > Launch Control and configure your settings from there. You will also need to turn on launch control per map under the Enable Special Features options. Check out page 12 of the RaceROM features guide for configuration info.
https://ecutek.zendesk.com/hc/en-gb/...eatures-Manual