ok rire just look at the subaru intercooler on top of the engine got more power than a golf so what i am gettin at is,is there any need for the fmic useless u put a ko4 turbo on thats all.wud look good tho m8.
To get the best performance out of your engine(be it a std 1.8t or a fire breathing 500bhp drag car),is to get the intake temps as cold as possible,cold air is more dense and will result in a bigger bang(more power).So in answer to your question,yes there is a need for a fmic regardless of what turbo your running,it will be sat ant the front of the car and getting lots of air flowing onto it.
To further this cooling process you can install mister kits that spray water onto the intercooler,this reduces temps even more.