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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
10hpto the WHEELS (thats 30 crank hp), and 1.5 mpg (thats a 10-15% increase)... i call BULL!!!!! theres absoLUTELY no way it releases that much power (more like 10 crank hp, or 3-4 rwhp), and it might free up about .5 mpg (5%).
Actually, there is an approximate loss of close to 30% in the drivetrain in the ram. That would mean that if there is a gain of 10HP at the wheels then there is approximately a 14HP increase at the flywheel.
If in fact there is only a 10HP increase at the flywheel then there will be a 7HP increase at the rear wheels.
I havent seen anything on a dyno but there is an assumed gain of 7-10HP at the rear wheels.
The stock thermostat will be fine. You just have to adjust your fan controller to come on just before the halfway mark on the temp gauge. With the 180 tstat, you can adjust the fan controller to cut on at a lower temperature (around 175 I think).