Earlier this year, around April I think, there was a thread about replacing the stock muffler on a V-10 with Magnaflow to improve power & MPG. Well, I replaced my stock muffler on my 2006 motor home with a Magnaflow, P/N 14261, my Ford air filter with a K&N and since I was going on a long motor home trip I changed the oil and used Amsoil.
In 2007 we made a trip from Florida to near Rapid City SD and back. This year we are making a similar trip to near Rapid City and now are continuing westward and are currently in Coram MT, near the west entrance to Glacier National Park.
Here are the MPG data I’ve compiled. In 2007 the round trip mileage was 4897 miles and I used 727.7 gallons of gas for an average of 6.73 MPG. This year, the miles from one way to near Rapid City Sd was 2474 and the gas was 347.7 gallons for an average of 7.11 MPG.
So, I gained about 0.4 MPG. I wish it would be more but that’s what the numbers say. I sure would like to gain more MPG, maybe some of those magic magnets would do the trick and give 10+ MPG.
On both trips I used the dash air, and generator at lunch stops as needed. I did not keep exact records of how long each were in use.
Since leaving the Rapid City area there have been more hills and I have been driving faster to build up momentum for going up hill and there has been a lot more time in a lower gear as I go up hill. I thought I would see a drop in MPG but we have traveled 723 miles and used 101.4 gallons of gas for an average 7.12 MPG. That surprised me.
As far as power increase, what I notice is that the motor home can pull small grades without the down shifting as often as it did before the changes and seems to accelerate faster when in overdrive and on a level road. The motor home currently has 14,867 miles and 337 engine hours.
Jack
Linear Mode
