The only other mods I've done are a K&N air filter and a Mivv Titanium end can plus the FCE. would you recommend a re map too?
It depends what you are hoping to achieve.
The K&N filter won't make a great deal of difference unless you also open up the airbox. The MIVV can probably adds a couple of bhp at peak rpm but otherwise just saves weight and sounds nice.
The FCE fattens up the fuelling in the mid-rpm range and adds some extra horses there but it's mostly to eradicate the fuel cut-off issue, not really an out-and-out performance booster.
You should think of tuning as an end-to-end process, improving gas flow into and out of the motor and altering fuelling to provide the optimum amount of fuel to go with the increased mass of air/exhaust gas that can be moved.
The US FZ1OA Gen II section has masses of info on tuning options and if your pockets are deep enough to match your ambition, you can really punch up the power over the stock motor.