mine used stock 4g91, 1234 ecu code and before this my ecu kong and try to used 5660 & 7375 code but cant used it coz diff socket but i can used GTI ecu 0450 & 2468 (1.8 putra). but now used back to 1234 ecu (6.5 rev cut) coz 1.8 ecu rev cut 9.5 rpm my stock engine cant tahan lorr coz like no rev cut ....