I have a 2004 2WD and my wife has a 2010 4WD, Both with 5.4 3 valve. I cannot believe how much more power her truck seems to have comapred to my 04. I know my truck is slightly tired (114000 miles) but this is depressing. I am not sure if my truck has lost power over time or the newer ones are just that much improved. Overall I am very happy with how my truck runs...of course as long as I don't drive my wifes! I have cleaned injectors, had tune up, good maintenance. Maybe it is in the flashing? Anyone have any ideas on how to restore/gain power.

 

to start, the 2010 has a 6 speed trans, while your 04 has a 4 speed trans. the extra gears make a huge difference

 

Plus the 2010 is newer, has benefited from some of the major solutions to the design flaws of the early 3V 5.4L's

 

Change your plugs & you will notice a huge difference!

 

6speed plus they could have different gears, that makes a hugh difference

 

I believe the 2010 is rated at a higher HP and torque as well

 

It's not rated that much higher in HP/TQ. It's the tranny that is making the difference. We're talking 300HP vs 310HP. You won't feel the difference between the two engines when strapped to the same tranny.

 

You have the '04 2WD and your wife has the '10 4WD.......

 

I test drove the '10's when they first came out and was amazed at what better performers they are when compared to the previous generation trucks. A short box-regular cab version of the 2010 with a 4.6 literally blew the doors off (in terms of acceleration) my 2005 short box-regular cab with the 5.4.....

My take is that the new trannys just make a huge difference in how the trucks perform.

 

I believe the 0-60 and 1/4 miles times are very close. Maybe 2/10s difference.