I agree with him somewhat about having 500rwhp is just not necessary, but then again you can control that hp. You don't always have to have the boost set on high. So if you want a 500+rwhp car then just be very aware on cold days your traction is going to be limited and in the rain all Z's are pretty bad, as Nixit said. But then again Anotnio you already know all of this. If you plan on building a 500+rwhp car just drive responsibly.