Today i have testing 2 ecu's on a 07 RXT. ( XS intercooler , 3" intake,x charger ,42"injectors.a/f gauge , 15/20 untouch )


1- stock ecu . A/F 12.4 7900 rpm
2- X stock ecu A/F 12.5 8040 rpm
3- stock ecu A-Kit X impeller A/F 12.3 8140 rpm i think rev limiter
4-X stock ecu A-kit X impeller A/F 12.4 8060 i think rev limiter