Easy performance mods for a Z750

Hello
when i bought my bike from SCM (kogarah) they invited me to a maintenance course.
When i went to this course a mechanic was pointing out a heap of cheap mods to a hayabusa to increase power/performance. Most of these mods were to do with the polution gear etc that when removed or changed would assist in horsepower gains.
Im figuring that these type of mods would work to an extent on any bike
Does anyone have experience with changes to the pollution gear or similar on the Z750 or in kawasaki's in general?
when i bought my bike from SCM (kogarah) they invited me to a maintenance course.
When i went to this course a mechanic was pointing out a heap of cheap mods to a hayabusa to increase power/performance. Most of these mods were to do with the polution gear etc that when removed or changed would assist in horsepower gains.
Im figuring that these type of mods would work to an extent on any bike
Does anyone have experience with changes to the pollution gear or similar on the Z750 or in kawasaki's in general?