He's talking out his ***.
There are a lot of people with dyno sheets making more than that..
even passing the 200hp mark...even with e T25 people get more power then 200 hp at the wheels

 

Sem is rite,BLAAST is talking out of his ***.That turbo is god for up to 225 hp or so.

 

Sorry about that. It actually Depends on what 0.42 a/r T3 you get.

most of them are 45 trim, which is good for a bit more than 150HP

But if you get the 50 trim, yes, you can push it over 200HP. Not sure what's on the volvo 740. Measuring the comp inducer would tell for sure.

You don'T want to be in the right most portion of the max efficiency island. That's where the compressor starts to seriously heat up.

EDIT: Here are the graphs. Just to show the info doesn'T come out of my ***....