I've intercooler, coil overs, uprated discs, manifold, elbow, decat to the arse, gtr fuel pump, air filter, new fuel filter, welder diff on the 180 .. where should I go from here, I don't wanna upgrade the turbo just yet.

Next: Power fc, injectors, all this tension rod lark (Doe these bits make a difference)?

Cheers,
Si