Dravidian 'f' revisited

While most of the Karnataka learn 'p' , 'ppa' , 'ba', 'bha' and 'ma'. We, in Tulu region, learn it as 'pa', 'fa', 'ba', 'bha' and 'ma'. In high school, our Kannada teacher, a migrant from northern region, would just look at the ceilings and would say nothing when we repeat his ppa(or pha... but this does not give the clear sound) fa. I guess 'fa' has a charm that 'ppa' can't capture. I wonder if it was Konkanis who brought 'fa' sound to this region. For that matter, I am not even sure if Indo-Aryan languages have this sound.