Getting misfire codes after header install - Dallas Fort Worth 5.0 Mustang Club

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Getting misfire codes after header install

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02-04-2018, 02:27 PM	#1
jrodri4566 Junior Member Join Date: Feb 2018 Location: Fort Worth, TX Posts: 2	Getting misfire codes after header install Hello, I recently installed some headers on my car, got a tune. And now I am throwing misfire codes: P0300, P0308. Not all the time has only happened twice so far in a 1.5 week period. Any input of what could cause this please let me know. Thank you, J-D

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