You want to get the kw but dont want to spend too much money?
And you bought a skyline!?!?! lol
hahah
From your mods now,
Id look at a newer/bigger turbo, injectors, z32 air flow meter, retune on ECU, Maybe a stall converter to get off the line better??- all depends on your budget and what you want out of your car mate. Is it going to be a straight line car? daily drive? track?
you need to look at what you want out of the car, and then go in that direction
My set up is pretty basic, its just the basic mods really.
FMIC, full exhaust and hi-fow cat, ecu, boost, hi-flow turbo - only makes 235rwkw - havent taken it down the 1/4 on this latest set up (I prefer the circuit!)
hope this helps