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Join Date: May 2012
Location: Littleton, CO
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Unless the chip is providing correction for the speedo, I'd lose it and get a different one,
SCT, or some other 6-position.
But either way - on a stock tune, with a good air-filter you should be getting at least 15+ MPG on the freeway at 65mph.
That's what I was getting.
I'd start checking for boost leaks and maybe cleaning the EPBS tube and sensor.
Just for reference - I'm running on 33's, and have a AFE CAI and 4 inch exhaust.
on a stock tune - cruising at 1900 RPM at right at about 70-73 MPH, I got 20+mpg.
That was before I put on my TS Chip.
2003 EX, 7.3L 4inch Lift, Nitto Trail Grappler's, KMC XD Spy's
k Miles, Currently 605tq, 312hp