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If any manufacturer could give you more HP and better fuel mileage reliably, they would.
Could you imagine how many 3.5's they would sell if they would get 25+mpg and 435 hp?
Oh dear God! Another take on the old ECT fooler. All that thing does is keep the truck in closed loop mode. Great way to run rich and risk torching the turbos and probably a plethora of other side effects.
MPT is another good one. Can't see a gain in mileage, but has much more go.
A company throwing a blanket statement out like that, always raises my suspension. There's more variables involved, each engine can produce different gains, or loss. MPT claims I've got just short of 450RWP by their dyno, it might not, it could have, or it might be more. Only proof would be putting your own truck on the same make dyno, and have the same guy there doing it.
A programmer is more versatile than a chip as well.
Oh dear God! Another take on the old ECT fooler. All that thing does is keep the truck in closed loop mode. Great way to run rich and risk torching the turbos and probably a plethora of other side effects.
I have a resistor I will sell you for $99. It will increase your HP by 50 and your fuel economy by 4.
Here is a follow up on this "chip." You guys were right, I gained nothing. Did not work in any way, shape or form. Nothing. Do not buy this "chip." It is all a ruse! Pretty disappointing.