bought a FRS yesterday, really nice straight car it was just filthy :-( its got the following done

Pumaspeed de-cat
Uprated coil pack
Magnecore leads
K&N Gen2
AP 6 paddle clutch
Pumaspeed remap..

Now to me the car feels slightly poorly mapped, if you know what i mean? a bit lumpy and the boost just comes in in a big lump..

Today I have ordered a blueflame cat back system,
The things I want to know are the following,

What are the advantages of running the actuator pipe direct. (and do i have to leave the amal valve plugged in or unplug it)?

Is it worth buying the forge actuator with blue spring?

should I have it remaped again? or buy something like dreamscience?

what boost (roughly) should it be running?

Sorry for all the questions but just gaggin to do stuff to it..