Apr 3, 2015 #1 S spank 141 New Member Joined May 30, 2014 Messages 83 Reaction score 0 Location So Cal I have a check engine light for a lean bank 2 and wanted to know what the computer changes. If it is just the fuel maps or does it also change the timing and how much does it effect a custom tune?
I have a check engine light for a lean bank 2 and wanted to know what the computer changes. If it is just the fuel maps or does it also change the timing and how much does it effect a custom tune?
