Hi group i have a 2010 mustang 4.0 i still have a 05-09 4.0 cai that i tried on my 2010 but its set off code for lean on both banks y would this happen if there the same drive train its a no tune cai sr performance and i have buddies with the same cai on 08 v6 thats not setting off any codes anyone have any ideas before i justsell it
