RS5 to have 4.2V8 FSI 450hp
No turbos, twin turbos or anything else ... just a plains V8 (well, with FSI). True or not, I don't know for sure, but "johnybravo" posted a file with all Audi future production on some other forums, I will just re-post the link here.
RS5 4.2 FSI
331 kW (450k)
S-tronic7
quattro
production May 2010
available Jul 2010
MYself, I like the number 450 for the hp, I am just wondering what's the tq for that engine (ussually it's not that much in such a high rev engine). But, it should be an improvement over the current 420hp 4.2V8 FSI.