I'm thinking of getting my MY02 STI remapped very soon.

For £95, is it worth getting the FSE Fuel Pressure regulator (as recommended by Lateral Performance) fitted.
(already have fuel pump fitted)

If so, should it be fitted as soon as I get it, or wait until nearer the remap date ? (I'd be getting my local garage to fit it)

Do they need setting up at all ? (any advice welcome)

Thanks,

 

was told by someone in the know that my wrx02 would be fine without a upgraded reg as long as you stick to the std ecu

not sure about a sti, you might want to ask the mapper