I have a 2012 (12) Zetec S TDCi it was a vast improvement from my mk6 1.2 zetec! I've got use to the power (not that there ever much) and even when pushing the car i manage a solid 50+mpg which i am rather happy with considering i do a lot of miles each week with work commitments.

However, i would love to get the car up to over 110bhp or more so i am able to give the petrol models a small run for their money with the diesel economy

I didn't even post the question i was wanting to ask, idiot eh!

Basically, is there a package out there that is reliable and doesn't void the warrenty?

There's nothing out that wouldn't void the warranty, i.e mountune.

There is a bluefin available though which I've heard it very reliable and you can take it off when the car goes to the stealers

And here it is -

http://www.mybluefin.co.uk/curves/Fiesta16TDCi95ps.pdf

I think I'll be buying one for myself next year, admiral aren't very mod friendly at all for things like this!