Ive just picked up my avant 1.8t and so far am loving it!

Just looking for some advice on tuning, im looking at doing the basics, air intake, exhaust and then remap.
On any of these areas does anyone have any suggestions or recommendations on products?

Im also looking to invest in some coilovers with a budget of around £600.

Im based in Bournemouth so on the remap is there any good local companies?

Thanks in advance Tom.