Thread: Exhaust smells like Ammonia
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      02-22-2020, 01:07 PM   #1
CMBX23
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Drives: 20' 540i M Sport
Join Date: Jan 2020
Location: CT/NY

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2020 540i  [0.00]
Exhaust smells like Ammonia
After cold starting my truck I notice a very strong ammonia/ Urine smell. No cel lights or any drivability issues but the scent is very noticeable. Can the CATS be bad already on it? Truck only has 5k miles
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