265 whp is inordinately high actually for a stock baseline. Here in the US, depending on the type dyno used and the location, it ranges from about 210 whp to around 230 who, for 2003-2006 models
so, assuming your baseline is a given % higher than the normally "accepted" #'s for the Zed, your car is in the 270 range, which for intake/exhaust bolt ons and a tune, is spot on where it should be