cm2250 -cm871

[BigfootDiesel]

im the new guy here and thank you for accepting me to the group
i have 2 isx im dealing with and would love to get help or if someone can point me to the
right person id much appreciate it.
firs one is a cm2250 it in a volvo and it has been mandated , looking for someone
who can do a remote hook up and go thru it and see but the biggest thing is id like more power
out of it it has cpl3719 i was told 450 was max it can do what are my options on this and is it possible to take it up and how much.

second one i have is a isx cm 871 this truck is all factory everything is working on it
i do believe the engine was replaced whats in the ecu does not match whats on the door and the valve cover is not helpfull as it is blacked out cant read anything from it.
but truck is running fine no issues cpl 2732 on this what id like to know is whats capable of being done to this to improve power and possible mpg.

thank you