Thanks for the info. Yes it is turbo charged. I know the charger is off a 7.3 L Ford Powerstroke engine capable of 20lb boost. Current EGT at 60mph normal road runs is max of 250oC (530oF) leaving plenty of room to increase fueling. The pump was fitted with a ceramic sleeve in the advance piston bore to reduce wear. The technology is mostly available in USA and it's a little daunting to know what are truths about a product upgrade and it's claimed improvements and what is wishful thinking. Are you able to point in the right direction for these upgraded larger flow DB2 pumps.
Thanks