Deceased 02/10/2010 - R.I.P.
Ducati Corse
Posts: 3,170
Join Date: Feb 2002
Location: Darlington, Co. Durham
Mood: NGRRC Minitwins champion 2007
Having spent many 10's of hours on dynos over the last few months I can heartily agree - I've seen the difference via data and felt them via the arse of my pants.
Just banging on any old pipes, chip or air filter is a waste of space. Do the job properly and get it fully mapped across the rev range.