From what I understand, the Amal valve is a simple fixed bleed via an off/on strategy ( whether manual switch or via ecu ), so it is very limited in what it can do vs a properly controlled solenoid/PWM control where you can map it throughout the operating range of the engine.

So with a suitable controller you could have boost by speed, rpm, gear, etc


But your statement above suggests there is already a form of boost control in place via the ecu, so surely you would have no need for this valve nor an Amal valve ?

Of course...simple can work well too ( with no valves at all, gate only )...really just depends what is wanted or needed.