http://cgi.ebay.co.uk/New-APEXi-Powe...1%7C240%3A1318

should try one of these filters got great reviews by one of the tuning mags but i cant rememeber which one,but it came out on top of all the filter for power gains/torque but also best filteration too,the list of filters blitz,hks,kn piper i think?
the test was done on a nissan skyline turbo which it gave silly power
the review is on the net some where.

as for pipe work why dont you try across the pond for idea's lots of tuners out there who tune focus try this site www.focaljet.com very good site iam a memeber on there myself seen so alsome turbo kits and coolers

http://www.zxtuner.com/main.sc

www.massivespeedsystem.com

http://www.steedafocus.com/


http://focus.c-f-m.com/index.asp?Pag...S&Category=655