F1 tuning claims 30% hp increase, 40% tq increase, you believe it?

[K20power]

@love4boost

Well there claiming in 1 day to increase those numbers by 30 and 40% lol. In fact, the e39 540 is one of the cheaper cars to tune… If it works you should take your fathers e39 to get tuned.

Yeah I’d be interested to see how much it actually gains…and how long it’s safe for.