before that
u need knoe r u goin to paint out side only
or u want to pant in and out side
r u gonna paint same original color or different color
wat type of color of ur choice?
then must see your car need to be done some rework or not
same color as original usually below RM2k
different color above RM2k
n it will go higher if u choose exotic color

sorry no experience with N16. probably one of the sensors throwing a code. The list is just too long. I usually start from the top down. clean up intake manifold----> check MAF ----->ignition system ------> O2 sensor -------> fuel pump.......in between check wiring.