[pgarner]

an easy way to look at it

if they claim they can get 7 to 12% lets go middle ground and say 10% ( its easy to work with ) your punto would be looking at around 8 bhp with my bora 18bhp for £30 .now a £230 k&n kit claims that it will give me around 10bhp and they have dyno graphs to back up a £600 full exhaust system wil give me around 10 as well. if it works why doesnt car manufactures add them as standard.

the likes of intake filter exhausts and the engine map are constrained by the manufactures simply because people dont look after their cars, also noise regs and emissions

fitment will be easy itll just be a case of removing intake pipe inserting and a couple of jubilee clips