do aftermarket ECU's controll boost? as in send signals to an amal valve/boost controller??
if so wich ones??

 

I'd expect 95% of them have the capability for this. How well it's implemented is another thing. Meaning, is it open look based, closed loop target boost based, both and changing between when needed, autolearning in addition to these, takes TP, gear,etc into consideration or not, ....