Ok, the pipe has been on a few days now.
New oe air filter and (GASP) drilled 3x22mm holes in the underside of the air filter housing with a tank cutter.
Its made a world of difference. It accelerates a lot smoother now weather accelerating normally or trouncing an Audi S3 lol.
Sounds nicer too. You can hear the air being drawn in.
If you havnt got one, get one.
Rich.
P.S not sure if i got the magical extra 1hp though.