In the one run I did against it I was definitely pulling away before the driver backed off as I could see the car slowing down.
I see
Gundam ran a few 200+ runs and maxed out at 207 mph, the car has 8% taller gearing , he can pull 230mph +

Im taking him to SRR 2moz to test Power, now we have run in Lol
As we have said (like yours) he was on a fresh engine, we had mapping to complete, checking all was well before opening up a little

Hoping to see the first 1000bhp on OEM turbos ,,,No pressure then.
850bhp should of seen you passed the 200 barrier did you have issues ?
Have You checked power of the LM850?
kk