[SigmundA]

Not surprising, the commercial version of the ISB in question only goes up to 360hp rating, usually they run 300 or 340 hp. The commercial versions all have SCR (Urea Injection) along with DPF an EGR.

In the pickup it's rated 400 hp. I wouldn't be surprised if in the pursuit of HP / Torque to keep up with Ford and Chevy's diesels they cut corners on the emissions. The hotter you run diesel the more powerful it gets, the leaner the more efficient it gets, hot and lean makes NOx in the combustion chamber from oxygen and nitrogen, the more NOX the more SCR you need to reduce it back in the exhaust.