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DJ Jagga · 02-05-2023, 08:24 AM

Will running a catted downpipe without a tune throw a check engine light?

Asking because someone wants to sell me a brand new VRSF catted down pipe.

02-05-2023, 08:24 AM	#14
DJ Jagga Enlisted Member 87 Rep 38 Posts Drives: 2018 BMW 540i xdrive Join Date: Feb 2023 Location: Delaware iTrader: (0) Garage List 2018 BMW 540i xdrive [9.00] 2018 BMW 540i xdrive [8.50]	Will running a catted downpipe without a tune throw a check engine light? Asking because someone wants to sell me a brand new VRSF catted down pipe.
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