Check your tax!

Hey! Hope you're all doing well. I recently purchased a 65 plate Focus ST-3 185 and absolutely love it to bits. I was wondering if anyone else here has/knows someone with the 185ps diesel in the ST and how much power they got out of it with minimal modifications? I want to keep it as a daily, so won't be going too extreme, sticking with a good remap and some little changes. On a related note, I managed to save with help from the end of year tax return last year. I hadn't realised I was overpaying until I was playing around with http://after-tax.co.uk/. Knowing I had that tax return coming helped budget an ST over a Zetec I was originally going for. Thanks in advance