my friend has a 94 f150 5.0l 4x4. and last august he got his engine rebuilt. and now it leaks oil so he took it to the guy who rebuilt it and he said he would check it. my friend says the truck doesnt seem to have any power. so the guy told him on the computer their is something called a burn chip, like when the truck gets old(more miles) the chip will burn a piece off cause the engine is worn and this will burn to adjust the computer so it runs good. is thier anything called a burn chip on the computer of the truck?