Compression Ignition Addict
Join Date: Jun 2010
Location: Albuquerque, NM
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I installed at GT3 before I ever towed the toyhauler, so I can't really compare that. Otherwise it seems to get around 1.5 to 2.0 mpg better on the freeway not towing. Just pulled a large box of a trailer to Montana last week, usually left the GT3 on "extreme", unless EGTs were climbing, then I'd back it off to performance. Towing the toyhauler, I usually leave it on performance, & if EGTs get too high, back it off to tow. Had I found this site before purchasing the GT3, I would have gotten the custom tunes for the same or even less $$$.
The boost reading on the GT3 is 2x what my Isspro shows, trans temp also reads higher than the isspro, and the oil temp never shows above 140, so I don't put much trust into what the display shows on the GT3.
'01 F250 7.3 PSD 4x4 EC SB. AFE Stage II, Banks 4" turbo-back, turbo housing & IC, Wicked Wheel 2, Rosewood 160cc/80 Single Shot Injectors, Beans Tunes, OilGuard bypass, Riffraff FRX & HPX, Zoodad, Harpoon, '04 18" rims, '07 Front & '08 Rear.
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