I didnt want to post their email entire without their permission. The general tone was that the same thing would apply as with the current box. Gauges recommended, intake, exhaust etc to control egt's. but the hp numbers were for the box alone. They said straight up more power could be had easily without tapping the wire than even the 130/400. Diesel Dynamics, BD, TST, and Bully Dog have all told me that there is lots of easy power to be had with these engines as soon as the turbo, intake, exhaust parts are available.