The .bin file looks suspiciously small?
Also the VMAX would be higher since the original top speed was higher than 405(407)
Not dismissing it completely, but it just looks a little off to me
.bin looks like an ME9 file though. Just because it's a Bugatti doesn't mean that it would have any more maps than any other car.
That said, how many cars are there out there which can top 400 km/hr?
As well, the Veyron was ordinarily limited to 400 km/hr unless you got out a second key which activated the top speed mode. This lowered the suspension and put the aero into a low drag configuration which would be reset if you hit the brakes. So the 400 KM/hr v-max found in this file actually matches the non-top speed run speed limiter.
The other reason I think it's legit is that it came straight from Bosch. The ori and map pack was made from a .HEX and an a2l. straight from a bunch of DAMOS files that appear to have been leaked directly from Bosch.