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Old 04-11-2010, 10:24 PM   #1 (permalink)
EcoModding Lurker
Join Date: Apr 2010
Location: Houston TX
Posts: 23
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32+ MPG Ford Excursion 4x4 Limited

Greetings everyone!

I just found this site while researching a new project car and thought I'd join up. (Looking at putting a turbo diesel into a 1966 Austin Mini Cooper.)

I've got a few more maintenance mods to make on my wife's Excursion, but between the new transmission and bigger injectors, shortly before our Christmas trip to Walt Disney World; it was a great discovery into how beneficial the upgrades were. With the fast traffic flow on the way over from North Texas, we averaged (all highway) ~26 MPG @ 70-75MPH (~2050-2300 RPM). We were able to stick to the speed limit on the way back and got ~32 MPG @ 60-65MPH (~1700-1900 RPM). City (suburban) driving is down around 18-20 MPG.

At almost 200K Miles, all of my focus lately has been on replacing / upgrading the brakes and suspension components. So, once I have that out of the way, I plan on adding a regulated return fuel system upgrade, which should make some significant improvements to engine noise, throttle response, and minor economy.

In case you’re wondering, in general, Excursions tend to have much better economy results after tuning than do F250s.

List of mods:
2001 Excursion 4x4 Limited, 7.3L PSD
-High Pressure Oil Rail Crossover Hose
-MBRP 4" Turbo Back with 3" down pipe
-4 possition Diesel Innovations Performance Chip
-International HO Performance Injectors
-ATS Transmission
Everything done by


Last edited by DaGuru; 04-14-2010 at 02:31 PM.. Reason: Added URL to project page.
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