EVO recorded 570 bhp for the 599 GTB and then changed tyres and saw 620 bhp so it can vary a lot depending on so much factors ... I also remember a Testarossa being tested in a magazine at 270 bhp :shock: The owner was crying
and then they measured it in 5th instead of 3rd gear and it did 370 ... there was too much power for the dyno in 3rd ...