KERS can only output 4MJ over the entire lap, and from Mercedes' performance last year, I'd say they've reached that limit already, so whatever power improvements from the PU will to have come from the ICE.PhillipM wrote:Venturing slightly off topic but from what was said about Hamilton listening to a Merc engine on the dyno this winter and recognising the circuit, the remark was 'that's one less change up the hill than last year' - so you could infer that yes, Merc will probably be running longer lower ratios as well this year, so that would be both williams and merc switching - which leads you to believe they've either found some midrange power from the ICE or extracted even more of a boost from the KERS.