My concern with your EGT is it might not be a true measurement as those temps are too low to spool most turbos. All my diesels run about 400C (750F) at cruise. How long is the probe and where is it located?
Your towing scenario puts you around 91kw at the ground. Which is very good for a 2LT.
But the problem is, to get that much power from an engine that size you need an A/F ratio that is far too low to deliver EGT that cool.
A 2.4L, 8V diesel with 20psi boost, 80% effective intercooling, IDI (300g/kwh) and 18:1 A/F will produce around that amount of power from about 3,500rpm with a good turbo. But EGT will be near 700°C (1300F).
