my car was running rich on the air/fuel gauge, then i change my stock radiator to aluminum and use 50/50 coolant. Now my car always run lean on the a/f gauge.
What happing??? Can the different temp of the coolant affect that?

 

vdfsdf

 

Do you have a wideband? If not then your a/f gauge isnt showing you ****.

 

but why would it change, that what i dont get. all i did was change the radiator.