Whats my options guys? i see theres the kits on pumaspeed etc. whats options such as air filters etc, air flow systems like induction kits and flexi pipes?
what are these upgraded leads people have bought aswel?
im a complete newby so please help!!

you can either by a full kit (Pumaspeed/Pumabuild/CodeRed/Mountune(warranty not affected for MT) or buy bits yourself and fit them yourself or pay somebody to do so, whichever way you go the end results will be the same parts/makes fitted to your car generally. In order of ease/cheapest and pound for your bhp:-

K&N air filter
Flexi Pipe
rear exhaust
full exhaust system
manifold
remap/DS
cams
supercharger
2.3 conversion
2.7 conversion

How does the 2.3 or 2.7 conversions work? And how much are they going to cost.?

Isn't it a 2.5 conversion
And thousands...

yup

Big £££'s

I always thought it was a 2.3 conversion you could do?.

also just for an idea of cost here's what Cosworth offer..

http://downloads.burtonpower.com/catalogue/14-17.pdf