Could missing or bad turbo u-tube seals give off an exhaust smell? I get an exhaust smell when a window is down or the sunroof is open.

I've had the exhaust system checked at two muffler shops and both said I did not have an exhaust leak anywhere.

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Steve
1984 300SD
1987 300E
2000 Harley Road King
2006 Honda Accord EXL
1971 Chevrolet C-10 Pickup