A report at Fourtitude says highly placed sources are stating the pending B8 Audi RS4 and the first edition of the Audi RS5 will be sporting a massaged version of the 4.2-liter V8 currently in the RS4 and R8. The mill would be getting a boost from 420 HP to 450-470 ponies, most resulting from opening up the already-shocking 8000 RPM redline.
If this rumor proves true, it finalizes the last piece of the engine puzzle we got a peek at with the Audi engine plan leak a while ago. Hopefully when Audi waves its wand over this version of the V8, they'll fix its thirst; then it would be truly perfect. [Fourtitude via Autofiends]
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