Lethal Performance Shelby GT500 Budget Return Style Fuel System


Manufacturer: Lethal Performance

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Lethal Performance Shelby GT500 Budget Return Style Fuel System

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Budget return fuel systems are intended to be used with STOCK fuel rails. May not work with aftermarket fuel rails.

Some people have reported fuel smell from the Fragola pushlite hose while others who use the hose have no complaints or issues. Because of this we now offer a PTFE fuel hose upgrade which is a teflon lined stainless steel hose. If you would like to order this kit with the PTFE hose upgrade please choose the upgrade from the dropdown menu.

E85 USERS: We recommend using the Walbro F90000267 465lph pumps as these are the only pumps sold by Walbro as a 100% E85/Flex Fuel compatible fuel pump. We also recommend using the DivisionX DX-0010MW fuel filter with wire mesh filter element as paper elements are not compatible with E85.

Lethal Performance and DivisionX have done it again! This time we're going to change the way the fuel delivery market works by offering our customers the ability to go return style but without the entire cost of a full on return style fuel system. Even better, with this new budget return style system you'll still utilize the stock feed line, stock fuel rails and stock fuel tank. This system comes complete with everything you need. Just install it and get your car tuned for the return style setup and you're good to go. 


How's it work?

It starts with a DivisionX billet fuel hat that houses (2) return style Walbro GSS342 pumps. The fuel hat installs in your stock fuel tank. Then we use the DivisionX hat to stock line adapter to connect the hat to your stock feed line. The next piece is a industry changing adapter that installs a DivisionX two port fuel pressure regulator onto your stock rail. Included is a 100psi liquid filled mechanical fuel pressure gauge, vacuum hose and t-fitting which allows proper installation of the regulator. From the regulator we provide a -6an return line which returns the fuel back to the tank through the DivisionX fuel hat. The last piece of the kit is our famous Lethal Performance dual return style harness which features (2) 20amp relays, (2) 10ga power and ground wires and dual 10ga power wires from the battery. In addition our harness and hat use OEM 6 pin connectors to make it a plug and play setup which requires no soldering. 


If you're unfamiliar with a return style kit here's how it works.

The fuel pumps are wired to run full time. Fuel pressure is set by the mechnical fuel pressure regulator. The excess fuel bleeds off the regulator through the return line and back to the tank. In this system we use a boost reference regulator. That means that for every 1psi of boost the regulator see's it's going to mechanically raise fuel pressure by 1psi. So if you start with a base pressure of 40psi and make 20psi of boost you'll end up seeing 60psi of fuel pressure when in full boost. What's great about a return style fuel system is that it's easy to tune, doesn't use any returnless style electronics and works great for both street and track applications. We run return style systems on our 2011 5.0L GT, 2010 GT500 and 03 Cobra. There's no reason to look back once we went return as we now know how well the return style system works. 


Kit Includes:

  • DivisionX Dual Pump Return Style Fuel Hat
  • DivisionX Two Port Fuel Pressure Regulator
  • (2) Walbro GSS342 Fuel Pumps
  • DivisionX Hat to Stock Line Adapter
  • 0-100 PSI Liquid Filled Mechanical Fuel Pressure Gauge
  • Lethal Performance Dual Pump Return Style Wiring Harness
  • All fittings and hardware needed for installation 
  • E85 Coating STANDARD!


NOTE: 07-09 GT500's require the use of a new fuel level sending unit which is automatically added when you select the 07-09 model year. The 10-12 GT500's use the stock fuel level sending unit, but require the use of an adapter bracket, again, which is included when you select the 10-12 model years.


** This system does not use an FPDM. It also does not require the use of a FRPS (Fuel Rail Pressure Sensor). Some tuners still prefer to keep a FRPS installed on a return style fuel system to help in tuning of the vehicle.

Manufacturer Lethal Performance
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