wuz up guys... i have an 04 L and i just wanted to know if the ford dealer would void my warranty if i delete my front two cats... and if they dont which should i remove front or rear... thanks
If you have an ESP warranty then yes, Ford will more than likely not honor the warranty with missing cats. Now that would be for anything they see as directly affected by the exhaust being modified. They won't say that the ring and pinion was affected by the cats being cut off.
As already mentioned, Emissions would be more of a concern to me.