snowy01

Hi I've got an r33 gtst s2. I have done a fue mods to my care from suspension breaks through to the engine which is where I need help. I have upgraded the coil packs, inter cooler, pod, turbo timer electronic boost controller and a new upgrade turbo to the car. I'm wondering if I should now do the computer and if so what to go for. My budget is limited as I've blown the bank ont the rest of the mods any ideas. I've tried doing a tone of research but keep coming up with all different things