VIM = variable intake manifold

at the intake manifold of the engine, it has 2 separate path for air/fuel to enter.... 1 is longer, another one is shorter.... when to use which one??... well, longer one is used during light throttle or cruising.... longer intake manifold path allows air and fuel to mix properly prior to combustion... besides, long intake path induces certain amount of backpressure, which is good for low end torque, especially for auto tranny cars...

shorter intake manifold path is used during heavy/full throttle... shorter path means air/fuel able to reach the combustion chamber faster.... thus, more power at high rpm range.....

what about IAFM??... its basically the same with VIM... the only difference is VIM is activated electronically while IAFM is activated via vacuum hose (mechanically)....

CPS is as i said before, similar with vtec/mivec technology.... the camshaft has 2 separate cam profile per valve.... 1 is normal street cam, another is highcams.... below a certain rpm activation point, it runs on standard cam profile.... pass that activation point, it switches to higher cam profile lobe, which will induce more power.....

why CPS and IAFM/VIM phails??... VIM phails because there isnt any major difference manipulating the intake length path... CPS phails because the higher cam profile isnt as great/powerful/high as vtec or mivec.....
err.... by manipulating the ecu mayb??... as far as i know, vtec has a vtec controller which controls which rpm to activate the rpm...  not sure if proton/R3 will create some sort of gadget for CPS or not....

wait, i dont think it is necessary since there isnt any significant switchover between both cam profile... haha... 
CPS and vvt is totally different thing lah... vvt/dvvt/vvti all those manipulates the cam timing (advance or retard according to driving condition/style)... while cps the technology of the valvetrain, similar to vtec or mivec....

available at where?

Available at original proton spare part shop or go directly to proton to order and install. I was quoted at glenmarie. But i think not worth it cauce the IAFM always break down after few months of usage and the car sounded like a lorry, if it's still under warranty can change la otherwise for modding you will be better off with other stuff.