Exhaust white inside exhaust exit tip

[fredfifty]

see pic. what does that white substance indicate?

 

[2Blue2]

Did you use any race gas or octane boosters?
Could the tune be off and running lean?
Cats breaking down and throwing crap?
head gasket slightly blown?
Maybe your car is up all night doing cocain?

Well I'm out of guesses, the peanut gallery will now shut up

 

[fredfifty]

hahahah

no octane booster, i did not do any aftermarket tunes, i did have a piece of the honeycomb of the cat that threw up out the exhaust tailpipe recently. coolant does not get low and is not milky etc.

 

[General karthief]

Run your finger in there and taste it.
no seriously, don't taste it, does it feel chalky, wet?

 

[fredfifty]

Run your finger in there and taste it.
no seriously, don't taste it, does it feel chalky, wet?

it does feel chalky wet if i recall. it goes away after driving. it appears to show up at cold start only.

 

[General karthief]

Condensation