Black PSE tip

[Callughan]

I've noticed on a few 997's with PSE the outer tip is black, is this normal? Or does it indicate something else?

[TheBMWDriver]

Its dirty, my one was like that untiled I had it cleaned

[Callughan]

So the inner pipe is just for show?

[STiG911]

No. The inner pipe does work too, (PSE cars only, on standard cars, both tips work all the time) but only during start-up and at the higher end of the rev range (above 5k rpm) so most of the time the outer pipes are the only ones pushing out those CO2's.
This does baffle me though - people go to all the effort of detailing a car for sale, then don't bother with the tailpipes, which are actually stainless steel anyway and should be easy to clean!

[williaa68]

I agree, that's ridiculous, not least as people like the OP may assume there is some bore-scoring issue!