Let's get technical: Tuning the ECU for mpg - Fuelly Forums

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Old 05-19-2007, 03:58 AM   #14
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Join Date: May 2007
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A lot of Dodge guys have done some work with the ECU and "fooling" it to run a leaner mixture. What I've done in the past is add a variable resistor to the IAT circuit to fool the thing into thinking it was seeing a different temperature. In real cold weather (0 degrees) I could actually get the thing to stall from fuel starvation.

The primary use of it is to increase HP by tuning the mixture. But with high gas prices, one could also tune for mileage.
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