BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST - View Single Post - Disabled control valve on 328i exhaust for better sound

unintelligible · 12-03-2012, 03:48 PM

Quote:

Originally Posted by david borla

For those of you who have disabled the exhaust valve, did this cause a CEL?

If you unplug the connector, it doesn't throw a CEL, but it does store a code... it came up using the BavTech scanner.