Re: Ethos Fuel Reformulator?
I also tried ethos. Sounded too good to be true, except it made my truck crappy running where fuel trims shot up towards the air, giving me a lean readout which turned on the CEL and no improvement in MPG.
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01 Toyota Tundra 2UZ-FE 90 Toyota 4Runner 3VZ-E
04 Ford F-250 Reg. Cab Long Bed 5.4L
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