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PUBLICATION NO. 178                                                                                                                                REVISED 6/94

 

VEHICLE RETROFIT
DEVICES AND ADDITIVES

The Environmental Protection Agency Motor Vehicle Emission Laboratory has reported to the Council of Better Business Bureaus the following results of its tests and evaluations of vehicle retrofit devices and additives under the authority of the Clean Air Act and the Motor Vehicle Information and Cost Savings Act. The EPA does not approve or certify any device. It does determine, however, in accordance with standardized procedures, the fuel economy, emissions, safety, etc., performance of vehicle retrofit devices and additives for which fuel economy/emissions improvement claims are made. EPA definitions of the various categories of devices and additives are contained later in this report.

 

DEVICES/ADDITIVES WHICH DID NOT
SIGNIFICANTLY IMPACT FUEL ECONOMY

       Device/additive                      Category

ADAKS Vacuum Breaker Air Bleed       Air Bleed
Air Jet Air Bleed                    Air Bleed
Analube Synthetic Lubricant          Lubricant/Lubricant Additive
Aquablast Wyman Valve Air Bleed	     Air Bleed
Auto-Miser                           Air Bleed
Ball-Matic Air Bleed                 Air Bleed
Berg Air Bleed                       Air Bleed
BIAP Electronic Ignition Unit        Ignition Control
Econo-Jet Air Bleed Idle Screws	     Air Bleed
Econo-Mist Vac. Vapor Induction Sys. Vapor Air Bleed
Econo Needle Air Bleed               Air Bleed
EI-5 Fuel Additive                   Fuel Additive
Electro-Dyn Superchoke               Intake System
Environmental Fuel Saver             Device Mounted Between
                                     Carb & Intake Manifold
Filtron Urethane Foam Air Filter     Intake System
Frantz Vapor Injection System        Vapor Air Bleed
Fuel Conservation Device             Intake System
FuelXpander                          Fuel Pre-heater
Goodman Engine System, Model 1800    H20/Water-Alcohol Inject.
Hydro-Catalyst                       Pre-Combustion Sys. Device
                                     Mounted Between Carburetor
                                     and Intake Manifold
Johnson Fuel Additive                Fuel Additive
Lamkin Fuel Metering Device          Intake System
Landrum Mini-Carb                    Air Bleed
Landrum Retrofit Air Bleed           Air Bleed
Lee Exhaust & Fuel Gasification EGR  EGR
Magna Flash Ignition Control System  Ignition Control
Malpassi Filter King (Tentative)     Fuel Pressure Regulator
Mark II Vapor Injection System       Vapor Air Bleed
Mini Turbocharger Air Bleed          Air Bleed
Monocar HC Control Air Bleed         Air Bleed
NRG #1 Fuel Additive                 Fuel Additive
Paser Magnum                         Ignition Control
Peterman Air Bleed                   Air Bleed
Pollution Master Air Bleed           Air Bleed
QEI 400 Fuel Additive                Fuel Additive
Ram-Jet                              Air Bleed
Rolfite Upgrade Fuel Additives       Fuel Additive
SCATPAC Vacuum Vapor Induction Sys.  Vapor Air Bleed
Smith Power & Deceleration Governor  Intake System
Sp.Form. Centrifugal Ign.Adv.Springs Ignition Control
Sta-Power Fuel Additive              Fuel Additive
Stargas Fuel Additive                Fuel Additive
Technol G Fuel Additive              Fuel Additive
Tephguard                            Lubricants
Turbo-Dyne G.R. Valve                Air Bleed
Turbo Vapor Injection System         Vapor Air Bleed
Vareb 10 Fuel Additive               Fuel Additive
XRG #1 Fuel Additive                 Fuel Additive

 

DEVICES/ADDITIVES WHICH INDICATED A
SIGNIFICANT POSITIVE IMPACT ON FUEL ECONOMY AND
WHICH DID NOT PRODUCE A SIMULTANEOUS INCREASE IN
EXHAUST EMISSIONS

       Device/Additive                      Category

Pass Master Vehicle Air Conditioner
Compressor Cut-off Device            Accessory Drive Device

 

DEVICES/ADDITIVES WHICH INDICATED A
SIGNIFICANT POSITIVE IMPACT ON FUEL ECONOMY AND
PRODUCED A SIMULTANEOUS INCREASE IN EXHAUST EMISSIONS

       Device/Additive                      Category

W/A WAAG-Injection System            H20/Water-Alcohol Inject.

 

DEFINITION OF DEVICE/ADDITIVE CATEGORIES

Accessory Drive - Devices which modify the method of operation or duration of use of an auxilary engine component (air conditioner compressor, power steering pump, alternator, etc.)

Air Bleed - Devices which bleed air into the air/fuel mixture after it leaves the carburetor and are usually installed in the PCV (Positive Crankcase Ventilation) line or as replacement idle mixture screws.

Devices Mounted Between Carburetor and Intake Manifold - Devices which go between the carburetor and intake manifold and are claimed to mix or vaporize the air/fuel mixture.

EGR - Non-original equipment EGR (Exhaust Gas Recirculation) systems.

Fuel Additives - Materials which are added to the gas tank.

Fuel Pre-Heater - A device that heats the fuel before it enters the carburetor. The fuel is usually heated by the engine coolant, exhaust or electrically.

Fuel Pressure Regulator - Device for controlling or reducing the pressure of the fuel delivered to the carburetor.

Ignition Controls - Devices which are attached/added to the ignition system or replace original equipment parts.

Intake System - General modifications to the vehicle intake system.

Lubricants/Lubricant Additives - Usually materials which are poured into the crankcase either as a complete lubricant or as an additive to a complete lubricant.

Vapor Air Bleed - Similar to air bleed devices except that inducted air is bubbled through a water-anti-freeze material usually contained in a bottle or jar located in the engine compartment.

Water Injection - Devices where an injection nozzle injects a fluid, such as water or a water/alcohol solution, into the engine (carburetor air intake) in response to a control function. The fluid is usually contained in a bottle or jar in the engine compartment and is pumped into the engine's air intake by a pumping mechanism.

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