People in here are running 400bhp+ on b16 and 600bhp+ on b18 without issues, built motors off course..... If I was you I'll do that when considering turbo, it's never to much to spend on reliability, and if you built your motor properly you'll be able to run high numbers without anything go wrong, well you'll need a proper map but no one will give a built motor to some guy on the end of the street to make a re-map right???