Originally Posted by
Mirek
I don't believe factory figures because the figures I know are completely different than what is claimed. There are cars I am quite sure about, for example Octavia WRC Evo II 320 Hp, Fabia WRC 07 340 Hp, Corolla WRC 320 Hp, Fiesta R5 300-305 Hp. I heard from several sources that Focus 08 had 370 Hp but I don't know that for sure.
I guess that current WRC 1.6T with 33 mm restrictor may have around 340 Hp. 36 mm restrictor gives approximately 20% more air which could roughly give a bit over 400 Hp. That's of course just my guessing but I find hard to believe that current WRC have less than 30 Hp advantage over R5 cars (Fiesta isn't the strongest anyway).