The tip of my exhaust seems to be rusting its a stainless steel one from powerflow only had it on for a few months. Is there anything I can do to prevent it spreading?

if its stainless it shouldnt rust.take it back

+1 on Dupleman's comment...

Powerflow Exhausts are Guaranteed!

don't worry its going back as soon as I can get the coupe off the drive. After more inspection the rust is inside a little chip, almost like the inside of it isnt stainless steel but the outside is. Like an armadillo or a dime bar

go in mate and say
"is this the way to armadillo?"

ive heard this from a few people with powerflow, as its only a franchise and not directly them some garages seem to try can cut costs and use other materials but like others have said they have a life time guarantee they have to change it

looked underneath at my silencer other day not a spec of rust.take it back mate

the fumes blwoing back from your car preserved it lol