Hi I'm newbie in remapping the ECU after 4-5 weeks of learn and tune Here is my result
My car spec
Engine M54B30
Injection Fomoco 420cc
Header Custom made
Air filter Gruppe M
Exhaust pipe Eisenmann
Nissan Skyline GTR ATS 1.5 way LSD
E36 MT transmission
E85 Fuel
After remap
243.145 HP @ 5891 RPM 153.5 KM/h
351.306 Nm @ 3250 RPM 84.7 KM/h