The flatspot can be ironed out with a decent map.
Good gains from a map & decat on a 197/200 combined - bring out a dollop of mid range gogo!
Sometimes it's not just about the figures if it adds to the driveability. Mods breathing mods need backing up with a remap so it's going to cost but could make the car much more enjoyable to drive!
Plus the things weigh a ton and the less time they are on the car the longer they will last!