460 EFI Guys low profile throttle body upgrade. It sure didn't run like this before!

We did a full tune-up for this customer before we tested anything. My God, this truck pulls so much harder after. Our test hill is an onramp at 5400 ft of elevation. With no wind, the stock throttle body hit 75 mph. The wind picked up while we swapped on the low profile throttle body. Then, going into the wind, the truck hit 85 mph in the exact same distance.
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460 EFI Guys Low Profile Throttle Body Kit