E9x / E8x In-Tank Fuel Filter & Regulator (V2) - Adustable Regulator W/ 1:1 Reference

The Precision Raceworks E9x / E8x IN TANK FILTER REGULATOR ASSEMBLY (V2) is designed for customers looking to run anything from low grade pump gas to the most exotic race fuels.  No matter what fuel you are looking to run this product allows for maximum flow, lower current draw, and fuel pressure regulation in a single package!

The New In-Tank Fuel Filter & Regulator (V2) is an updated version of our original design.  Over the years since the V1 unit we created was developed we have learned a great deal more about squeezing everything out of a fuel system possible.  So it only made since to pull the V1 design since it was not the best we could do and create a V2 that really packs all the features. 

Modular By Design - This unit is both modular and high flow for compatibility with almost any configuration! 

This option includes a 1:1 boost-referenced regulator that mounts in the engine bay and integrates seamlessly with our new in-tank filter regulator assembly.  This regulator is fully adjustable allowing for the customer to dial in the exact pressure they want to target.  However, this regulator by design is intended for race applications and does not have a check valve built in so fuel pressure bleeds off when the vehicle is shut off which can result in longer cranking cycle or rough idle when starting the car.

Simply put, you get more fuel from your tank to the front of the car than you ever have before while also reducing current draw to help extend the life of your EKP (factory pump controller).

We have known for years that the biggest single bottle neck in the fuel system of the E9x and E8x chassis cars was the fuel filter/regulator assembly.  For the first time ever we are sharing real and accurate data that shows just how restrictive it really is!

We gained 37% more flow at 72psi using our in-tank filter regulator over what a new OEM unit did on the flow bench. To put this into perspective a Walbro 450 flows about 318lph at 70 psi, a Walbro 535 flows about 418lph which is roughly 31% more than the 450.  While that is a nice gain our filter/regulator has a more substantial gain than upgrading from a 450 to a 535 when looking at the complete fuel system in your car.  Best of all you can have your cake and eat it too!  Stacking our filter regulator with a Walbro 535 fuel pump you combine the gains of both for one serious single pump low pressure solution.  Oh and did we mention, with either of our engine bay mounted regulator options the flow increases by 100%, that means a single 450 pump is capable of flowing the same as what traditional setups running twin 450's on the stock filter/regulator were capable of!  Best of all this all happens with the use of the factory fuel pump controller and reduces the load on the controller when compared to single 450 (and larger) fuel pumps that still have the stock fuel filter/regulator assembly!

Need even more fuel or already have a dual pump setup so what is the point?  The flow increase was even bigger when you get into dual fuel pump solutions.  On the bench we saw a 43% increase in flow at 72psi over what the stock units can provide.  That's insane even more so when you consider that this is more fuel than 3 Walbro 450's can provide through the factory filter/regulator assembly.  Even more impressive with our in tank filter/regulator assembly the current draw drops down to 36.86 amps from 39.7 amps.  Oh yeah and just like with single pump these flow numbers are with the standard included regulator that is back at the tank.  When you use either of our engine bay regulator options you see 99% increase in flow basically doubling the fuel that you get on a stock filter/regulator with twin Walbro 450's.

Features:

• Compatibility with any fuel pump on the market including stock!
• Oversized in tank supply line and connection at input to fuel filter/regulator
• Replaceable Filter Element (10 micron microglass - USA MADE)
• Works with any fuel lines that connected to factory fuel filter!  (can be changed to any fitting that uses AN6 ORB)
• Regulator Choice: 

  • ​Adjustable 1-to-1 - This option mounts the regulator to the rotary (n54 style) HPFP.  This includes all lines necessary to connect to a BMP manifold or Plate style PI system along with the return line and the return port fitting.  Ideal for those running specialized fueling systems with needs for pressures above or below 5 Bar.

• All Billet Construction (no plastic here we learned from factory units that fail due to plastic cracking, plastic is not the way to go)
• Least restrictive method ever developed results in highest flow possible and reduction of current drawn through EKP extending the service life of the EKP with upgraded fuel pumps

Specifications:

• Weight:  2.2 lbs
• Material type: Anodized Aluminum
• Fuel compatibility: All Fuels
• Flow Increase: 37% for single pumps & 43% for dual pumps (higher flow achieved with optional engine mount regulators available)
• Filter Included: YES - 10 micron Micro-Glass (Replacements available here)
• Regulator included: YES - Adjustable 1-to-1 regulator
• Fuel Lines required: NO - Works with any lines that currently connect to OEM unit

Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.