Gelo

Hello I have a problem with RB25det swapped to S13 (normally CA18DET). Auto runs not good as it could. Car has got intercooler and piping, free flow 2,75" exhaust, 2,75 downpipe and run at 0,55 bar. Dyno shows 252KM at engine. But car run not very fast.. When we swap original ECU to Power FC (original map) auto starts running !! Acceleration is much much better. There is no traction on 2nd gear (on oem ECU traction is good evan on 1st gear..) Have somebody good idea ? Thanks a lot