Intake manifold, injectors and throttle body advice needed

I'd like to improve the performance of my ZS 120. By improve I don't mean rev it up so I can thrash the ******** out it. I suppose improve on the basic performance. I was thinking about a 52mm throttle body. Also using an aluminium inlet manifold rather than the plastic one and perhaps an injector upgrade.

I'm not overly worried about mpg. I've had the car back a week now and just managed to put 100 miles on it. That was with trying to make excuses just to go out and drive it. Without all of the kids wanting to come with me.

Would those upgrades be worth the cost? Would they even be a noticeable improvement? What other changes could be done? Ie: induction kit, exhaust?

Improvements without changing major engine components like cams etc.



Kind regards,

Tommy

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