Oh, I don't know. What about the 50's BRM V-16 supercharged 1.5L at 500hp? Or the F1 turbo days in the 80's knocking out 1800hp out of a 1.5L. 550hp out of a 2.0L seems easy now, right?
<img src="/forums/images/graemlins/lol.gif" alt="" /> <img src="/forums/images/graemlins/lol.gif" alt="" />

My mistake, the BRM had 600hp at ~12K rpm with 5.7 bar of boost which is of course 82psi <img src="/forums/images/graemlins/zombie.gif" alt="" /> <img src="/forums/images/graemlins/zombie.gif" alt="" /> <img src="/forums/images/graemlins/mrt.gif" alt="" /> Imagine the size of the pistons. Total displacement was 88ci split in to 16, spinning at 12k rpm...all in the early 50's, wow!