Right, i’m going to say this once again, hopefully for the very last time.
Both the GWR 800 and 802 sets all entered passenger service with the larger 1550L fuel tanks. The 1350L fuel tanks only appeared on the first four units and were changed out prior to entering service. Unit 4 was the first iirc, done for the fuel test runs in early 2017.
Both the 800 and 802 sets all entered passenger service set to 700kw, although this was heavily governed to reduce engine wear. The class 802 were initially set up with a different (more aggressive) initial acceleration curve. Both classes are to have the same traction software set up, in time for the December timetable.
The seat covers in the 800 sets were initially to the “Government” pattern. This was/is being changed out to match the GWR 802 pattern.
The large brake resistors are on the Cl.802 fleet. These are spray proof but not wave proof, the salt from which will short the resistor circuits and therefore the engine cuts out. There is a software mod being done to allow for repetitive resets, which usually allows the engines to restart.
There are contractual reasons why the two fleets cannot be fully interchangeable. They are on different maintenance regimes and the 800 sets are limited as to which depots they can see at night and in what quantity.
