Fill it up again Dummy
Join Date: Sep 2012
Location: Central Valley, Sierra Mountains, California
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When you tune the engine one of the parameters changed is the boost, what you are seeing on the boost gauge is lower then it actually is. Most tunes trick the pcm into thinking it is lower then it is so what you are seeing is probably 5 lbs or more than on gauge.
What I would do first is pull your ebp sensor and clean the tubing it is in, remove it from exhaust manifold and run a wire through it then blow out with air. Then see how you do, that tubing often plugs up with soot and raises hell with the turbo.
No you should be no where near 9mpg, I have 38x15.50 tires and get 16.5mpg on the highway and 13.5-14.0 in town but I am stock with a ficm tune only.
EGT max temps I am thinking 1,200 is the most you want to see but someone else with temp gauge will hopefully chime in and confirm that.
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2006 F250 LARIAT CCSB 4X4
ARP Studs, O-Ringed Heads
X4 PHP 65 HP Custom Tow Tune
CAT EC-1 Coolant, IPR Coolant filter
Fass-125 to a Adjustable Pressure Reg.
Turbo-back SS 4" pipe, Corsa Muffler -7" Tip
6.4 starter, DC Power 270 amp alt
Die Hard Platinum AGM all 2/0 Cables
Fabtech Radius Arms
7" lift w: Icon Progressive Coil Springs
2008 up Carli/Deaver rear springs
2000 Watts of McIntosh Bliss
All riding on some Fatty-Daddy 38/15.50/18 Toyo's