Heat shield ah, if u can find a way for that it is good lor... I never use lah. Shouldn't be a problem. Just find a drop in filter with the correct size that can fit.
I know that this have been brought up many2 times. But i believe someone out there have the diagram. I'm planning to install Works EMS-1 piggyback ECU to may Satria Neo CPS, And i hope someone could shed some light...