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Real World Hose-in-Hose Test Results

For those interested, this is the most recent system update:

DFA finally ripped out the original Vegistroke system after about 2.5 years of making change after change and have now accomplished a full reinstall, prototyping a few new parts, including the soon to be released patent pending "Hose-in-Hose" (HIH) setup, a new heat exchanger design, a single gauge that reads fuel pressure and fuel level, and a few other goodies.

And of course when DFA designs something, it has to be able to live in a real truck, one that actually gets used.

One of DFA's concern with the Hose-in-Hose setup was the rather small Inside diameter of the fuel line. But what better way to test this than with a spur of the moment Camping trip to Timberline Lodge at the top of Mount Hood, about 6,000 feet higher than DFA's home base. 

So after hooking up the Desert Fox, and the loading the family, the DFA Vegistroke PSD rolled the scales at 19,000 lbs, with the aromatic smell of French Fries.  Ok, so for the good part- with the Edge Evolution set to the 75hp mode, here were the conditions noted under the steepest climb:

• Pedal Position - floored

• Gear- 2nd, Torque Converter locked

• Boost - 27psi

• EGT - 1200, pre turbo

• Trans temp - 185

• EOT - 235

• RPM - 3000

• Road Speed - 50ish (tall tires, speedo not quite right)

• Fuel temp - 210

• Fuel Pressure 80psi

• Outside temp-28

• length of this pull- about 4 miles

Here is a personal note from Jason:

"Sound like we pushed the Vegistroke kind of hard? You bet. That's the best way to find a weak link.  And DFA is proud to say, none showed up."

"This time."

"I can say the list is long of parts I have broke and replaced with stronger on the entire truck. But for the context of this Forum, the purpose of the test, the fuel pressure never budged. And Further more, when I momentarily hit the purge button to intentionally drop pressure, it recovered almost immediately indicating that I still had sufficient flow reserves yet, in other words- the fuel system still wasn't quite maxed out. So should be sufficient for those few that push it even more than I do."