heheh for NEo i don`t have any experience on it...due to i haven`t drive once...but i know this car power to weight ratio are strong and fast....about piggyback for EMS700 some people did was install SAFC2. but just for the fuel maping..can`t do any ignition timing..same to my car...siemens EMS400 i didn`t touch anything on ECU but in enigne..most of the time..hahaha...tell me bout it :) im driving a satria neo MT with siemens ECU.. stock ECU...
But the only thing i saw people DOne wasn install Adjustable Fuel regulator and Adjustable Cam pulley..and not to forget Mythelogy lighten crank pulley, which dyno proven increase on the Hp and torque....
but most of the time people forget to install A/F ratio meter this will help alot when doing Fuel pressure adjusting and CAm adjusting....for perfect tuning...