The Fuel Management Unit

Getting Technical

The FMU, also know as a “boost dependent fuel pressure regulator,” only increases fuel rail pressure when boost is applied to the reference port on the FMU. This regulator is in the return fuel line and is downstream of the static fuel pressure regulator. The FMU is a simple mechanical device that can be calibrated by changing the internal ring and spacer. Inside an FMU is a piston. The boost pressure comes from the manifold to a fitting on the FMU and applies pressure to a washer sitting on the piston. The larger the washer, the more pressure it applies on the piston. The piston pressure blocks the flow of fuel down the return line. This backup creates a higher line pressure because the fuel cannot freely pass through.

There are two key ingredients to making horsepower: fuel and air. We are going to discuss the most popular methods of increasing the quantity of fuel, to support the air entering the motor under boost, and its relationship to the amount of power you are trying to make.

3 Steps to Delivering More Fuel

Traditionally, there are three most common ways to deliver more fuel to your engine. They are:

  • Upgrade Your Injector Scenario
  • Utilize the Power of the FMU w/ Existing Injectors
  • Use a Computer Programmer to Regulate Fuel Management With Upgraded Injectors

Upgrade Your Injector Scenario

To get more fuel, you can run larger injectors, increase the pressure to the injectors you already have, or add an auxiliary set of injectors. The auxiliary set of injectors usually squirts fuel into the manifold and requires a secondary injector driver to tell the injectors when to fire and for how long. This method is effective for street cars because it lets the car run like normal with smaller injectors. It is also good for cruising because it prevents the motor from overloading with fuel and stumbling. It then allows the second set of larger injectors to give more fuel when you are trying to make power. The major downside is that this method is very expensive because of the additional components required. Furthermore, it can be very difficult to tune because of the wide adjustment range of a completely separate set of injectors. This common dilemma led to the eventual creation of the FMU.

Utilize the Power of the FMU

The FMU is great because it allows the car to run normally on a small injector, but can also increase the rail pressure under boost which, in turn, forces more fuel through the same size orifice. The fuel that the FMU adds has a direct relationship to the boost pressure. The proportionality is usually stated in a ratio, for example 12:1. This means that the FMU will add 12psi of fuel for every psi of boost. (For example, 10psi of boost will add 120psi of fuel pressure.) When all is said and done, this could net a total of about 140psi of fuel pressure which is often too much for a little injector to handle. It is also the reason most people opt for a combination of larger injector and lower ratio of FMU. This is an ideal setup because it allows the same quantity of fuel but at a lower pressure which is more constant for tuning and less fatiguing on the injectors.

Computer Programs and Fuel Management

The third most popular method of increasing fuel is to add larger injectors and use a computer chip to calibrate and control them. This often can cause the car to run great under boost. However, it is often harder to mange when the car is a daily driver or when cold started. Even this method only can supply enough fuel to support a given amount of pressure. Eventually it, too, requires an injector so large that it would not be suitable for any type of street driving – just racing.

Conclusion

This is why the FMU has become so popular. It offers great versatility for street and strip use. You get the ability to support horsepower and still have the street ability of a daily driver. It is also mechanical and not very complex, so there is little chance of having any reliability issues. The final attribute of an FMU, that has make it popular, is its ability to be easily recalibrated (for a relatively low cost) to match the injector choices you make.

Find your FMU parts here!

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DRAG ILLUSTRATED GETS “DIALED IN”

FOR IMMEDIATE RELEASE:

KIRKSVILLE, MO (August 8, 2014) – Drag Illustrated Media today released the digital edition of its highly popular, fourth annual Sportsman Special Issue, following the mailing of the award-winning print edition to subscribers around the globe.
DI August82014“Being that we don’t owe allegiance to any sanctioning body or specific segment of drag racing, we’re free to cover the sport from top to bottom, left to right,” says Drag Illustrated Editor-in-Chief Wes Buck. “It’s something we’re tremendously proud of, but it also leaves us with a lot of ground to cover over the course of every year’s 12 issues. Well-knowing the role sportsman and grassroots racers play in our industry, we’ve always believed they deserved more than a mention here and there, and that’s why we developed the Sportsman Special Issue, our annual nod to some of the best, most interesting and relatable racers in the sport.”

Drag Illustrated’s Sportsman Special Issue isn’t limited to one variation of sportsman racing, instead covering the gamut – from Top Sportsman and Top Dragster to footbrake, no-box and class racing, as well as high-level Top Alcohol categories. 

“For guys like Glenn Butcher, who landed the cover of this year’s Sportsman Special, Top Alcohol Dragster hitter Chris Demke, Super Stocker Brad Zaskowski and the many others profiled in DI #89, it’s pretty special – validating, even – to see themselves featured on the pages of the same magazine that has been covering drag racing superstars like John Force, Jason Scruggs and Don Garlits for nearly eight years. We recognize that and that’s why we pull out all the stops to give these weekend warriors the same superstar, red carpet treatment that we give professional drag racers.”

Additional print copies of Drag Illustrated’s Sportsman Special Issue are available in limited quantity. 

“We can’t deny the exposure presented by our digital edition, which is available for free on our website and gets over a million views annually, but we know that there’s something special about the printed word,” continues Buck. “Every year we’re pleasantly surprised by the demand for additional print copies, so we’ve had to do extended print runs on several of our special issues. From racers who are featured wanting to buy cases of the magazine for friends, family and sponsors to advertisers wanting copies to hand out at their shops and at events, we’re given a fairly regular reminder that amongst this group of people print is still the gold standard.”

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ABOUT DRAG ILLUSTRATED MEDIA

With unparalleled access to drag racers and opinion-forming storytelling, Drag Illustrated lights the fire for the next drag racing conversation. Drag Illustrated is not affiliated with, nor is it bound by any sanctioning body or association. Therefore free to cover a wide variety of cars, classes, events, locations and, most importantly, people. Big interviews. Insightful commentary. Delivered with the passion and energy that only drag racers can understand.

For more on Drag Illustrated visit www.dragillustrated.com
 

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Whipple releases 12-14 Jeep Cherokee SRT 6.4L Supercharger kit!

Whipple Superchargers is proud to announce the release of the 2012-2014 Jeep Cherokee SRT supercharger kit. The new 2.9 liter front feed supercharger system running 8.5psi of boost makes a whopping 570+rwhp from the stock 395rwhp! Each kit comes with an oversized true-flow oval filter and cold air intake system, high flow fuel injectors, oversized heat exchanger, oversized intercooler reservoir, MSD fuel pump booster with programmable voltage curve, massive air-to-water intercooler and industry leading front feed design (without a comprimised shaft in the intake path)! Nobody packs more power and more performance as the Whipple system for the Hemi 6.4L engines! More power per dollar than any other system, the true Whipple advantage!

Some exclusive features:

  • No other upgrades required, just massive power right out of the box
  • Front entry W175ax (2.9 liters) Whipple twin-screw supercharger that significantly outperforms competitions 1.9L and 2.3L roots-type systems
  • Front feed supercharger utilizes precision ground helical cut gears vs a problematic belt or shaft through the inlet that causes massive VE loss
  • Massive high flow cold air intake system included
  • Integrated Crusher™ 109mm round inlet outflows smaller 90 and 93mm inlets such as other Eaton based systems
  • Integrated Crusher ™ 109mm round inlet for optional oversized throttle bodies
  • Integrated design allows for oversized intercooler core compared to other smaller intercooler cores giving Whipple lower air charge temps which allows more boost and timing to be run on pump gas
  • Massive super high-density air-to-water aluminum bar-plate intercooler with offset air-fin offers more cooling than any other positive displacement system available
  • Massive aluminum intercooler reservoir holds more than double the IC water than any of the competitors, more water, more power
  • Whipple Superchargers massive oversized intercooled air-bypass system for industry leading reduction of burst knock and incredible fuel economy, no ridiculous fabbed steel tubes or systems that circulate hot air
  • Self-contained oversized oil system for dramatically reduced oil temps in even the most demanding conditions
  • Exclusive 3×5 rotor combo for significant increase in airflow under the curve than less efficient 4×6 rotor combo
  • One-turn turn inlet allows for decreased induction losses when compared to rear inlet systems and 180deg bends
  • Center discharge port for better cylinder to cylinder distribution then other twin-screws with cobbled together billet adapters and forward facing discharge
  • Discharge down design allows for less pressure loss which gives more power at lower boost levels
  • Top mount design allows for cooler operation then upside down SC’s that conduct heat from engine and are trapped by runners and covers, causing hotter manifold temps and less power per pound of boost
  • More boost at the “hit” than any other twin-screw
  • Flat torque curve for incredible acceleration
  • MSD ™ Fuel pump booster with pre-defined voltage curve for less pump duty cycle then other pump boosters, only supplies increased voltage when needed, others are on/off
  • MSD ™ Fuel pump booster voltage curve can be adjusted by user, no need to purchase “competition” version, already included
  • Oversized heat exchanger for incredible intercooler water temps
  • No internal engine modifications required
  • Completed installation looks factory installed
  • Kits come complete with all necessary parts and hardware for installation
  • Unique oil level sight glass for easy oil level and quality check, no dipstick to bind or misread
  • Plug and play wiring with male and female connections
  • Optional high flow air filter system featuring a S&B True flow filter
  • 65lb/hr High flow fuel injectors included
  • Proven 6-rib belt system with adjustable idler system for easy belt changes and multiple pulley configurations
  • Stainless steel jack-shaft with unique plastic cover (or optional carbon fiber) for increased safety
  • OEM quick connect fittings for easy installation, no ugly brass or steel fittings on the SC
  • Complete kits, Tuner kits and Hot Rod kits are available
  • Available in wrinkle black, polish or any custom color
  • Easily upgradeable with big cold air intakes and bigger throttle bodies
  • Instant boost at the touch of the throttle
  • 3 minute pulley changes
  • SCT Flash tool that allows you to read and erase codes and multiple data log features
  • 1 year warranty

*Kits are currently not legal in the state of California and are intended for offroad use only.

 

Whipple DYNO Jeephttp://whipplesuperchargers.com/index.php?dispatch=news.view&news_id=10

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July 22, 2014 · 12:32 PM

Superchargers Online is Upgrading

SIMI VALLEY, CA – The gearheads at Superchargers Online are working hard to better serve their customers and vendors every day. They have outgrown their current facility in Chatsworth, California with supercharger systems stacked up in the hallway and repair parts overflowing the shelves. Now that Superchargers Online is an EATON® Authorized Service Parts Dealer the need for a larger facility is a must.

Superchargers Online is going to more than triple its warehouse space in order to meet the demands of its customers. “Having more parts on the shelf and shipping out an order the same day helps us provide a better service to the customer and increases customer satisfaction immensely,” said Brian Zacuto, owner.

The phones will be unplugged during the move Thursday July 24th through Friday July 25th, but online orders will still be accepted. A 5% discount code will be offered during this time for all online orders over $99 placed over the long weekend. The coupon code is: SUPERMOVE.moving

Superchargers Online, also known as Supercharger Connection, is an online retailer specializing in the sale of new supercharger kits and repair parts from the industry’s leading manufacturers. Supercharger installs are also available. For more information about Supercharges Online, please visit www.superchargersonline.com or call 818-518-9889. Superchargers Online, 4615 E Industrial St Unit 1H, Simi Valley, CA 93063

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July 22, 2014 · 11:22 AM

EDELBROCK Releases Their 2014 Corvette Supercharger Tastefully Named “Stingray” 624 Horsepower!!!

The true potential of this legendary sports car has been unleashed by the Edelbrock E-Force supercharger system! The 2014 Corvette features a new Gen 5 LT1 engine platform which called for ground up re-design of the E-Force system, enabling Edelbrock engineers to incorporate several new design features like a super low profile manifold and runners for hood clearance with no hood modifications required, a cast water crossover that simplifies the intercooler hose routing, as well as an aggressive new look and finish, boasting a two-tone powder coat and tasteful new badges. All in all, this system delivers substantial power gains in the form of a bolt-on- kit that is sure to turn heads and tear up the asphalt.

Features:

  • Two-tone powder coated finish
  • Compact design fits under the stock hood
  • Low boost pressure for minimal stress on engine
  • Bolt-on installation – everything fits right out of the box
  • Self contained oil system with 100,000 mile service interval
  • Integrated bypass valve helps conserve fuel economy
  • 50-state emissions legal
  • Optional powertrain warranty

 

  • 1570 Supercharger, Stage 1 – Street Kit, 2014, Chevrolet, Corvette, Z51, 6.2L LT1, With Tuner
  • 15700 Supercharger, Stage 1 – Street Kit, 2014, Chevrolet, Corvette, Z51, 6.2L LT1, Without Tuner
  • 1571 Supercharger, Stage 1 – Street Kit, 2014, Chevrolet, Corvette, Base, 6.2L LT1, With Tuner
  • 15710 Supercharger, Stage 1 – Street Kit, 2014, Chevrolet, Corvette, Base, 6.2L LT1, Without Tuner

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Eaton Coupler Sale

Eaton Nose cone service kits are in high demand. Because of that SuperchargersOnline is offering a sale on Eaton Nose Cone service kits.

This Eaton coupler is one of the main reason why a lot of Eaton supercharger owners are hearing a rattling sound in their supercharger. Once the coupler starts to ware out the holes become egg shape causing the pins that slide in the holes to bang around a cause the rattling sound.

This is a simple fix to an issue that can lead to big problems down the road.

For more info. on these Eaton Supercharger couplers please visit

http://www.superchargersonline.com/index.php?main_page=product_info&cPath=512_690_1572&products_id=7063

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Vortech Small Block Carbureted Chevy Cog Supercharger Kit

Vortech Small Block Chevy Carbureted Kits with V7 YSi and Cog Drive Systems

Vortech SBC Supercharger Kit

Looking to go to the extreme with your Small Block Chevy engine? Is 700 horsepower not nearly enough to quench your need for speed? Do you love the sound that only a cog drive can provide? Well, if you’ve answered yes to any of these questions, then the new Small Block Chevy Cog Drive Tuner Kit from Vortech may be just what you are looking for.

This system comes ready to make big power with the 1,200+ horsepower capable V-7 YSi-Trim supercharger, ultra-stout twin-plate supercharger mounting configuration with billet aluminum manual belt tensioner and all necessary hardware, and of course the 50mm cog style belt drive. Included drive spacing options are compatible with both v-belt and serpentine style accessory configurations.

For more info click here

Remember you seen it first at http://www.SuperchargersOnline.com. Tel 818-518-9889

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