I appreciate the info. Now on the selecting a catch can. From the looks of things on this forum everyone has their own opinion. Looking for quality, durability, and ease of operation. Effectiveness is key as well.That soot is most likely from you cruising along and then you romp on it, causing it to come out of the tail pipe. I notice it alot more running 91 Octane fuel and my 91 performance tune than my winter 87 tow tune and 87 octane.
This is normal.
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