Originally posted by ChiliSVT:
Originally posted by BrApple:

drop in gas milage is because of the CEL, so getting mil eliminators to turn the CEL off will improve gas milage, headers could but not if you have a heavy right foot and like how your car sounds at WOT




Originally posted by projectsho89:

FWIW, the cat efficiency codes won't cause the PCM to go into any mode that uses more fuel.....

Steve





so which is it?




The second answer is correct.


Jim Johnson 98 SVT 03 Escape Limited