I own an r31 that i have converted to niccs silver top motor (r32) but befor I did the engine conversion I had chip torque re chip the factory ecu With a duel stage chip that is controlled by a toggle switch and has settings for 14psi & 18psion 18psi with a 3" exhaust, heighflowed factory turbo, fmi & 1 extra vl fuel pump mounted in line the car made 230hp@the wheels. I have this ecu for saleI want $350 for it (The chip cost mearound $1000 including dyno time) Obviously a stand alone aftermarket ecu will be alot more flexable and a better option for the long term but this ecu may suit you depending on mod's ect and would be quite a cheapa alternetive depending on plans for future mods.