Hey Shandy T.
If it's just noise you're after then there are some options, but if you're after power then you're going to have to go a lot harder than just a panel & remap.
We're talking Cams / ITB's at a minimum, forced induction as a preference.
But, anyway, yeah, you could go to K-Tec for a map, for instance, and you might get a few hp more, but the £/hp ratio will be silly. Mind, if it's all about noise, there's a pop/bang remap about that makes an awful din and is particularly chavvy, but it does make a lot of noise.
Oh, and welcome to Cliosport