The Driven Diesel Regulated Return Kit also includes replacement Fuel Feed Lines (from the fuel filter to the cylinder heads) that eliminate the stock Check Valves and the 'kinks and crimps' of the stock feed lines. This is accomplished by tying the end of each fuel rail together through a Bypass Fuel Pressure Regulator.

This kit eliminates the 'dead-head' stock fuel rails and provides adjustable fuel pressure capability to the Powerstroke fuel system. PLEASE SEE THE IMPORTANT NOTE BELOW ABOUT RECENT CHANGES TO THESE KITS! The Driven Diesel Regulated Return Kit for the 99-03 Powerstroke Super Duty is an important part of the fuel system upgrade process. *Overnight shipping not available on these items. A tracking number will be forwarded to you by email as soon as we receive it. If you are needing this sooner please call us to check on their 'in-stock' status. 7-10 day delivery delay should be expected due to this being a specialty item.

*A note from DP-Tuner: All Fuel systems upgrades are DROP SHIPPED from our supplier's warehouse.

The Driven Diesel Regulated Return Kit for the 99-03 Powerstroke Super Duty is an important part of the fuel system upgrade process. Sales of ANY of our fuel system kits into California (or any other state that uses the CARB system) will result in a customer’s vehicle possibly failing the visual emissions inspection. Note from the manufacture: Please be aware that we DO NOT have a CARB EO# for our fuel system kits, and as of right now we do NOT have any plans to pursue one. Expect longer than normal ship times on this kit.

Dp 7.3 tuner