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New Product: JPC Coyote Fuel Rails

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By EditorTurner

New Product: JPC Coyote Fuel Rails

The Extreme

JPC Racing offers new Extreme Volume fuel rails for high-power Coyotes

By Steve Turner
Photos courtesy of JPC Racing

We live in an age where power is not limited by the available hardware, but by your imagination—and your wallet. When it comes to the modern-day Coyote 5.0-liter engine, making power is not that difficult. Throw on a power adder, pump up the fuel system, and find a top-notch tuner to dial it in. Of course, as you want to make more and go faster, you might need to upgrade the engine, and you will definitely need to upgrade the supporting hardware.

For owners of high-powered Coyote engines, JPC Racing now offers two Extreme Flow fuel rails, which will ensure your engine’s injectors receive a steady supply of fuel when the rpm climbs. They include the brackets necessary to bolt on with either the stock GT intake or the Boss 302 intake.
For owners of high-powered Coyote engines, JPC Racing now offers two Extreme Flow fuel rails, which will ensure your engine’s injectors receive a steady supply of fuel when the rpm climbs. They include the brackets necessary to bolt on with either the stock GT intake or the Boss 302 intake.

Knowing that many people are pushing the Coyote platform harder on the racetrack—because they do it themselves—the crew at JPC Racing determined that the power and rpm these engines are capable of means that the fuel system is really stressed. If you are one of those hardcore Coyote racers, you might just be in the market for JPC’s new Extreme Flow fuel rails, which are available in -10 (PN 002011-14; $299.99) and -12 diameters (PN 002011-14XL; $349.99).

“Think of a fuel rail as a pressurized reservoir. Every time an injector fires its like opening and shutting a valve very rapidly. What happens is the fuel-rail pressure makes a sharp dip in pressure (of a few psi) and then recovers. Well when this happens at high rpm this can cause fuel pressure to fluctuate a psi in the rail. What this causes is an inconsistent fuel flow on each different pulse of the injectors on that bank,” Aaron LeBlanc, Sales & Marketing Associate at Justin’s Performance Center, said. “Lets consider you set your fuel pressure at 60 psi. On a high-horsepower application at WOT one pulse might be at 60 psi, while the next is at 54 psi, and the next is at 56 psi. The goal of the larger fuel rail capacity is to have a larger volume of fuel in the rails to minimize the amount of fluctuation within the fuel rails.”

Here’s a striking comparison of the -12 and -10 Extreme Flow rails next to a traditional -8 fuel rail billet rail. It’s clear the JPC units are larger, but according to JPC the -10 rails offer a 62 percent increase in capacity over the -8 rails, while the -12 rails offer a whopping 252-percent increase in capacity.
Here’s a striking comparison of the -12 and -10 Extreme Flow rails next to a traditional -8 fuel rail billet rail. It’s clear the JPC units are larger, but according to JPC the -10 rails offer a 62 percent increase in capacity over the -8 rails, while the -12 rails offer a whopping 252-percent increase in capacity.

In some applications, JPC has even seen a power increase from the more consistent fuel delivery. If your Coyote tops out around 900 horsepower, you can go with the -10 rails. However, if you are pushing the envelope past four digits, you’ll want to opt for the -12 rails.

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