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Discussion Starter · #1 ·
Any recommendations? My car runs and starts perfectly, but for the first few minutes it spits out black muck on my white wall.

Any recommendations for tailpipe turndown tips?
 

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B;

It's SCIENCE!

Moisture content of exhaust is being condensed by cold exhaust system (it's a still of sorts!), the drops dislodging and taking black carbon along with it...once exh sys warms above dewpoint of exhaust gases, this phenomenon no longer occurs...if you're lucky enough to actually park your car in the garage (instead of this being a shop/storage area like for the rest of us normal people) you can put a piece of cardboard in the target area (or momentarily drape a rag over the exhaust tip to catch the mess), or start and warm the car in the driveway, like the rest of us...I wish I just had your worries...!

Cheers
 
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