It all depends on the the spec of your engine. Was that figure at the wheels or flywheel? Personally I'd sooner have a conservative power figure rather than some over the top claim. All dyno's and their operators differ. Where did you have it done?
A custom remap is well worth doing once you have done all the mods you intend to. Smoother power delivery, better economy and driveability plus if you're lucky more grunt, it really is a win win situation.