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
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