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Join Date: Nov 2012
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My dad ran a Mach7 on his Excursion for about 10 years on a stock motor and never had any issues. He usually just switched between 2 and 4 and never used the super hot tunes but his trans and engine were fine. I have a Jasper rebuilt trans and a blueprinted/studded etc. engine. I plan to use this tuner the same way my dad did and maybe turn it up to 5 or 6 when towing but that will be it. The Mach7 doesn't change your ECU at all it just intercepts the signals from the ECU and changes them before they go their destinations, its just a jumper on the harness basically.
I totally understand the interception devices for power with diesels. Edge had the edge ez for fords and dodges, there is the 10k mod with icp sensor and adding a resister with the 7.3l, and modules like pedel commanders and the stealth stryker module etc edge even came out with the attitude boxes that plugged into many sensors in the engine bay for shift on the fly later on. I wish you the best of luck with the mach7. The facts are still there though. They don't change the transmission tuning to match the (intercepted and changed ecm readouts) from the module giving the truck some extra power. So it may work but you are still risking/missing out on better/safer power.
I did find some people running a transmission only tune from a sct tuner and then running the module box like yours but it was very old and the owner never followed up with any good/bad reports.
-99 F250, 4X4, 6.0 trans cooler, 08 mirrors, 05 grill, AIS Intake, lvl kit, JW Vbody, cncfab hpop lines, WW2.
04 Excursion Modified, 04 F350 Modified, 06 F350 Modified
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"Its like me getting five 5 gallon bucks and throwing regular, mid, premium, #2 diesel and offroad diesel and then shooting a roman candle at each one to show which ones burns better."