2006-08 f150 4.6vs 5.4

I've had the 5.4L for 8 years and the engine is indestructible. It's the best thing since the 300-6. With a few modifications it will outdo all the other trucks. I've added a cold air intake, magnaflow cat-backk dual exhaust, and an Edge Programmer. I get great performance and great mileage...

melchizedek wrote in news:4d040ad2$0$8356 $ snipped-for-privacy@unlimited.newshosting.com:

Just for fun, what do you consider great milage out of a 5.4?? KB

I have a 2005 Expedition EB with the 5.4L and 87K miles. It is a great engine, powerful and good milage. I get 13-14 mpg in the city and 17-20 mpg on the highway (65 - 70 mph). 15 mpg at

The only trouble with it is that I had one of the ignition coils burn out at 75K. And I had to have the accelerator pedal sensor replaced also then because it was intermittently failing also. Not bad for 87K miles.

Lynn

Here is a few suggestions. I run a 5.4L myself. I get great mileage. I have only changed 2 ignition coils, and that was before my modifications.

I put cat-back Magnaflow dual exhaust. I put on a cold air intake. These both made a little improvement in milage and power. But the big improvement I got was with a programmer. I bought the Edge Evolution Programmer. And I run regular gas all the time. I have had the programmer for 150,000 miles now. Have not had to change any coils......