It's from Thailand, got one Kelisa YRV turbo with 1 bar boost using this ECU, running on automatic gearbox, personally i seen it. Looks pretty stable if you ask me.Aiya... learn from my mistakes la. Don't go for unknown, unsupported, unverified ecus that no one has heard of or tuned before. I made that mistake with Spitronics and haven't stopped regretting.
If you have "a lot" of owners who run this ECU without problem i hope you are good friends with these owners because I do not agree with this ECU. Incidentally why not spend this money to get your standalone ECU for the BMW-1JZ. that would have a WAY bigger impact than your turbo 4B11. Hell, the BMW gonna be faster too and a nicer drive I'll bet.
BMW is a different category, its made for leisure driving so with 260 whp, it's plenty good enough. Turbo 4B11 on the other hand, its my daily not-boring ride.