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

Am I wrong? I would never want to like… seriously fuck anyone, especially not local but it’s a good selling point that might make the car sell easier no? lol and the reason for 20% more then the dyno numbers was becuase that would be an estimate crank horsepower right? Crank horsepower looks better then whp lolol… 290 sounds respectable, I was embaressed to post the measily 238whp my car made today.