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FAST

FAST | Fuel-Air-Spark-Technology Intake Manifold, Throttle Body, EFI, Tuning and Ignition

 

Since the 1990’s, FAST (Fuel Air Spark Technology) has been recognized as the industry leading developer of aftermarket electronic fuel injection technology. Year after year, FAST engineers have released innovative products, driving the growth of the aftermarket EFI marketplace. With a technical support staff beyond comparison, FAST has built close relationships with its customers by responding to their aftermarket EFI product support and development needs. In 2001, FAST became a member of the COMP Performance Group. With the resources of CPG’s extensive R&D and Engineering department, the fuel injection innovator has consistently developed industry changing products; taking their EFI technology from the racetrack directly to the street.

Today, FAST continues to drive the aftermarket fuel injection industry through ceaseless new product development. With a complete line of industry-leading fuel injection products including self-tuning and programmable EFI systems, polymer intake manifolds, billet throttle bodies, and tuning tools complementing the extensive CPG catalog of performance valvetrain and drivetrain components, FAST is committed to bringing the best fuel injection experience to both racers and street enthusiasts worldwide. Current FAST products include EFI Systems, Ignition, Intake Manifolds, Throttle Bodies, Fuel Injectors, Air/Fuel Meters, EFI Components, Distributors, Power Packages, Fuel Systems, and Transmission Controllers.  Accesspeed is proud to offer FAST products to our customers. With our lowest price match guarantee, you will always find the best combination of price and selection at Accesspeed.

 


Air Intake and Induction » Mass Air Flow Sensors

What is a Mass Air Flow Sensor or MAF?

The mass air flow (MAF) sensor is part of your vehicle's electronic fuel injection system. The MAF sensor calculates the total amount of air entering the engine through the intake tract, and tells the computer how much fuel to inject for air coming through the intake. 

 

 

How does a mass air flow sensor work?

The mass air flow (MAF) sensor has two sensing wires in the housing that protrudes into the intake tube prior to the throttle body.  One wire is heated by electrical current, the other is not heated at all.  As air flows across the heated wire, it cools the wire down. When the temperature difference between the two sensing wires changes, the MAF sensor automatically increases or decreases the current to the heated wire to compensate, telling the computer how much fuel to send through the fuel injectors.

 

How much horsepower and mpg increase can I expect from an aftermarket mass air flow sensor?

Aftermarket performance mass air flow (MAF) sensors replace your OEM sensor and improve on mileage and can increase horsepower by up to 20-HP, depending on the vehicle and engine. Performance MAF sensors increase airflow and low-end torque, without robbing top-end power, and works with factory electronics.

 

What are the symptoms of a bad mass air flow (MAF) sensor?

  • The engine hesitates or drags while under load or idling.
  • During acceleration, you experience hesitation and jerking.
  • The engine coughs, sputters, or hiccups.
  • Excessively rich idling or lean idling.
  • The engine is difficult to start or crank over.
  • The engine stalls or dies shortly after starting.

 

Can you drive with a bad mass air flow sensor?

Yes and no. Yes, you can drive your vehicle with a bad mass air flow (MAF) sensor, but only to get it home or to a repair shop to fix or replace it. Ignoring this problem can lead to far more severe engine problems and damage.

 

Why would a car run better with the mass air flow sensor unplugged?

If your vehicle runs better with your MAF sensor unplugged, you likely have a shorted-out sensor. When the computer does not read a signal from your mass air flow sensor, it provides the computer with a stock signal that will allow you to drive your vehicle for a short period of time to get it fixed or replaced.