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F1 warning message and red warning light

49K views 7 replies 4 participants last post by  Icebreaker  
If the FI light appears right after the installation of the aftermarket slip on it is almost 100% due to the exhaust servo which no longer operates as the ecu expects.

Read the codes, which I believe on an 07+ is a very simple procedure and may only involve holding down the mode button and reading the display. I am fairly confident it will be code(s) 34 and/or 63.

I recommend removing the exhaust servo entirely and plugging in a servo buddy. Problem solved.