Black soot coming out of new exhaust
Could anyone out there explain this?
I put a 4" turboback exhaust in on Sunday. 3 days later I went under to see if anything was loose and tighten the bolts up and found some black tar-like substance in 2 locations. One where the pipe is connected beneath the passenger's seat and some at the tailpipe.
Is this normal? Is my engine clearing out some soot because the exhaust is less restrictive? Any other ideas? Is this bad?
This pic is the connection beneath the passenger's seat:
This pic is the tailpipe:
2004 F350, Crewcab, 4X4, 6.0L Diesel, Shortbox, 285/75R16, K&N FIPK, 4" turboback MBRP cat delete S.S. exhaust
Last edited by dwh; 05-07-2009 at 04:32 PM.