Just to let people know AlienTech which most tuners use in the UK now supports our Mazda 3 Skyactiv 2.2D MY2015 via OBD tuning once updated to V2.22.......Full support for read - write - and checksum correction.
Excellent result, especially with Nm. Mine is maxed out between 2200-2800rpm (463Nm max, very similiar graph in that range), so nearly 500Nm is kind of record I guess. Congrats!
Whats your exhaust temps? Reaching 900 °C?