v4.0 New generation of software. Cold start, idle stability and lambda control have been significantly improved. 5th Feb 2024 v4.0.18 22nd Aug 2023 v4.0.17 30th Jun 2023 v4.0.16 30th Jun 2023 v4.0.15 5th Jan 2022 v4.0.14 5th Jan 2022 v4.0.12