A thread started by Computer Cowboy got me thinking about fuel efficiency and how it can be a sign that something isn't running correctly. Unfortunately my X is new enough to me that I don't know how well the numbers I'm getting compare with everyone else.
On a recent trip unloaded up to New Hampshire I averaged around 13.2 MPGs. The entire trip was on the highway with my speed between 65-68 the whole time. Of course my 4.30s don't help matters any.
What do you guys typically get in similar driving situations?
I just returned from eastern Washington over Stevens Pass and averaged 12.8 cruising around 65 with about 25% of the trip in 4WD running thru the mountains in heavy snow conditions. Was pleased with this and consider my X in a good state of tune.
from what I've read that's about average. I recently bought my X and had a 215 mi drive home. About half of the trip was right around 78-79. The mpg came out to 13.45. I'm in the process of calculating the around town mileage and the way the needle moves down I don't think the results are going to be very good. BTW X is 2004, V10, 4X4.
I've done a few tweaks to improve my fuel economy.
Chop off CAT and muffler, install straight pipe and Flowmaster Super44
Keep MAF sensor clean
Replace PCV valve
I did these three things all at the same time this summer and I was able to get 13MPG (hand calc) on a few hundred mile trip, this is with 315/75R16 tires. Previous to these tweaks I couldn't get over 10MPG.
I suspect each one of these tweaks helped, but that the CAT delete helped the most. It has been argued a lot before, to me it makes sense, not making the engine work hard to push exhaust out makes it run better.
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.