Unsure. But some things that can be done if you haven't done it. Clean the MAF sensor if equipped, tune up, change out the PCV , check any pending fault codes, O2 sensor faulty and maybe check for vaccum leaks. More undetected air is entering in and the Computer is adding fuel to make up for the extra air entering in after the MAF sensor. Hope that helps?
I wanted to buy one of these but I think it's just best for me to buy a Toyota around the same year or honda so I won't have these little issues here and there.
