There is something wrong with the 109 in regards to engine over heat. I sent a track ages ago to nineline, where i was on 1.8 MW50 climbing holding a speed of around 150KM/h +/- and i got to over 6K from deck which at that speed took a while and then gave up because i got bored and it didnt overheat.
Came nowhere even close at roughly same speeds in Dora and 51.
But ED doesnt really care, look at the Dora, MW50 been borked now for well over a year!