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My truck is the 2011 Outdoorsman with the Hemi and I've had it since Sept. 2011. When It was brand new it got the mileage that is bragged about on the TV ads... 15-20 MPG.
The first mod I did was install a K&N cold air intake system. Big, big increase in horsepower and very noticeable increase in MPG's.
After reading more mods in these forums I decided to change the exhaust up a little. I purchased a new "Y" to eliminate the constriction created by the factory bends in the exhaust pipes. At the same time I purchased a Magnaflow muffler to replace the stock one. It sounds and runs awesome but the mileage went to the ditch! At first I thought it was just me putting my foot into too much to hear how fine it sounds. But after several months of honestly not dogging it and even using the cruise on the highway, the best it will get is 17-18 highway.
I'm considering putting the stock muffler back on.
Does anyone have any recommendations and or had a similar outcome after virtually eliminating any back pressure in the exhaust?
Thank you in advance!
The first mod I did was install a K&N cold air intake system. Big, big increase in horsepower and very noticeable increase in MPG's.
After reading more mods in these forums I decided to change the exhaust up a little. I purchased a new "Y" to eliminate the constriction created by the factory bends in the exhaust pipes. At the same time I purchased a Magnaflow muffler to replace the stock one. It sounds and runs awesome but the mileage went to the ditch! At first I thought it was just me putting my foot into too much to hear how fine it sounds. But after several months of honestly not dogging it and even using the cruise on the highway, the best it will get is 17-18 highway.
I'm considering putting the stock muffler back on.
Does anyone have any recommendations and or had a similar outcome after virtually eliminating any back pressure in the exhaust?
Thank you in advance!