its been a while since i've been on ....but i'm now thinking of doing some work on my RST

the car is standard apart from the exhaust and filter as per usual , but i'm thinking of upping the power a wee bit lol

I have a Pace intercooler arriving and was thinking of going for a Stage 1 set-up.

What other stuff do i need?

i know about

-31 actuator
chipped ECU


My ECU question is my car is 90 spec with hearts and diamonds ECU, but could i fit a different pattern chipped ECU or should i look for another 90 spec one?