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Old 03-10-2010, 12:10 AM
StoneyWV StoneyWV is offline
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Join Date: Feb 2010
Location: Leonardtown, MD
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Vehicle: 2010 Ram Quad Cab 4X4
Trim Level: ST
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I would try a programmer that mods the parameters that cause the truck to downshift. Is it decreasing speed when it shifts down, or does it just drop down when still maintaining?
I was looking into a gear swap for my truck with the 5.7 because I figured I couldn't really gain anymore power than a Hemi and keep a fair gas mpg. 3.55 to 3.92 would have been about 200rpm diff for me, and i don't think that would fix the problem I have. I was just looking to keep the 4 banger mode in longer while driving on highways with very mild rolling hills(very mild).
But after much research, the issue I think is ultimately going to get me is I like to set the cruise on about 75 and there is too much wind resistance on the truck at that speed for the motor to overcome in 4 mode without going up about 400 rpm and that would kill the mpg, and there is no program avail to adjust the MDS, which I have found. Tried the test and took the truck down to 63mph in cruise (very hard to get passed by big rigsand it worked like a champ without coming out of 4 mode with the decrease in wind resistance the little bit of throttle input was fine to maintain the mode.

Hopefully you can find a programmer that mods the tranny and adjust things out the way you like them.
2010 QC ST, 5.7L, 4.10 Gear Swap, 5100 Leveling Shocks at 1.7", K&N Drop-in, Pioneer U310BT, 2/12" DC Level 3/Net Audio Sub Box, JL Components, ARC Audio Amps, Flowmaster American Thunder duals, Granite Alloys sporting 34" Falken Wildpeaks, HID conversion full blackout.

Last edited by StoneyWV; 03-10-2010 at 12:16 AM.
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