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Discussion Starter · #1 ·
Hello, just an FYI:
After headers, 3" exhaust, 225lph fuel pump, 26lb injectors, adjustable fuel pressure regulator set to 44psi, accel coil, 9mm wires, iridium plugs .05 over, k&n air filter, accumulator valve body and a deep pan on the tranny, and more on my 12,000 lb rig towing 3500 lbs for 2300 miles...

Before upgrades - 5.6mpg.
After - 7.7 mpg.
That's exactly what I was hoping for, so I'm pretty satisfied
 
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