just fount this old thread looking for some tuning tipd for my bros st170

iv so far fount the millitek de cat/flexi pipe combo (10bhp apparently) would like to see that proven.
dreamscience or bluefin ( but gt motorsport in stoke made a great chip for the st and on average it gave 8-10bhp) so might use there.
piper fast road exhaust cam

think them mods should perk it up a bit, he already has a k&n panel filter