hm mine doesn't or i just don't notice

 

this is just condensation mixed with the rich soot that coats the inside of your entire exhaust. take your finger and rub the inside of your muffler tip. its that but when you startup after not running for even a day or two, it will create condensation which comes out from the exhaust flow. perfectly normal!!!

 

before with the entire exhaust hooked up your muffler or resonator would catch the condensation then eventually evaporate when the exhaust would heat up. no worries

 

Same here

 

I see the same stuff, no worries

 

Hmmm looks like Creosote, you should call a chimney sweep asap

 

Mine did it too.

 

i have what looks like takeoff burns in my garage from my car... its been building up... i just tell my friends its my test pipe... same crap

 

When you burn hydrocarbons, a combustion reaction takes place. Part of the reaction produces H2O and if the combustion reaction isn't complete, you produce carbon, or soot. When your exhaust system is cold, and doesn't produce a perfect seal, the two mix together and come out as a disgusting mini Exxon Valdez on your floor.

 

I had the same thing happen every time I started my turbo MY06. I made a post and the feedback at the time was that it was blow-by. Not sure exactly what it was but it appears to be common with FI S2000s. My Evo 9 doesn't do this (has a TBE so you can't pull that card); only thing that has every happened is some condensation coiming out the tail upon initial startup.