I will be using the Splater z200 for paintfest and was lookng into way of increasing the fps.
A simple spring change can get it around 170 from what I have heard and doing research online however I was wandering if anyone else knew of anything I could do to make it a beast
Not a lot, 170 is about as far as they go, trouble is you've plastic parts holding back the main spring, to get more power you need a stronger main spring, putting too much pressure on those plastic parts.