Electronic boost controllers,

The Car in question is a fiesta rst fitted with a Greddy multi boost setting controller. I am Basically looking for some guidance or advice on what to do with this Item which is currently fitted.

The cars set up to run 20psi, on ofab with a superchip which has been mapped by Ahmed bajoo around 5 years ago, the previous owner of my car from the top of his memory touched on the fact that they found it difficult to map the car with the boost controller and that they wanted to do away with it and fit a 3bar map sensor?. The reason for this thread is That I am looking to maybe do away with the boost controller but i don't want to mess things up. If i remove it would I mess the map up? Would I cause issues else where?

Its got a low/hi boost setting and I have admittedly flicked between both settings but really haven't noticed any difference at all. The cars having issues at the moment as it is, with boost cut just over 11psi and then other times it will fly to 20psi with out hesitation if this is related I don't know!.

Should I take it out and run it on an Amal valve? Or leave it in?. Orrr ?? .

Cheers