Approval Details

Valid E.O.


This Executive Order approved the specified parts on on April 17, 1978.
As of Monday, August 26th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

1978 and older gasoline powered vehicles

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-80
  • Executive Order 80 / D80
  • ARB # D-80
  • Executive Order No: D-80
  • C.A.R.B. No. D-80
  • Resolution D-80
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-80 PDF

D-80 Document:

                          State of California
                          AIR RESOURCES BOARD
                         EXECUTIVE ORDER D—80
             Relating to Exemptions under Section 27156
                         of the Vehicle Code

                           MILEAGE MINDER CO.
                        "MILEAGE MINDER" DEVICE

Pursuant to the author1ty vested in the Air Resources Board by Section
27156 of the Vehicle Code; and

Pursuant to the authority vested in the undersigned by Section 39515 of
the Health and Safety Code and Executive Order G—30A;

IT IS ORDERED AND RESOLYED: ~That the installation of the ."Mileage Minder"
device manufactured by Mileage Minder Co., 2999 Mission Street,
San Francisco, CA <©94110, has been found to not reduce the effectiveness
of required motor veh1c1e pollution—control devices and, therefore, is
exempt from the prohibitions of Section 27156 of the Veh1c1e Code for
installation on 1978 and older gasoline—powered vehicles.

This Executive Order is valid provided that installation instructions
for this device will not recommend tuning the vehicle to specifications
different from those listed by the vehicle manufacturer.

Changes made to the design or operating conditions ‘of the device, as
exempted by the Air Resources Board, that adversely affect the per—
formance of: a vehicle‘s pollution contro] system shall invalidate
this Executive Order.
Marketing of this device using an identification other than that shown
in this Executive Order or marketing—of this device for an:application
other than those listed in this Executive Order shall be proh1b1ted unless
prior approval is obtained from the Air Resources Board.

This Executive Order does not constitute any op1n1on as to the éeffect
that the use of this device may have on any warranty e1ther expressed or
implied by the vehicle manufacturer.


No claim of any kind, such as "Approved by Air Resources Board" may be made
with respect to the action taken herein in any advertising or other oral
or written communication.

—MILEAGE MINDER CO.                           EXECUTIVE ORDER D—80
                                                        (Page 2 of 2)

 Section 17500 of the Business and Professions Code makes untrue or mis—
 leading advertising unlawful, and Section 17534 makes violation punishable
 as a misdemeanor.             j

 Section 43644 of the Heailth and Safety Code provides as follows:

      "43644: (a) No person shall install, sell, offer for sale, or |
      advertise, or, except in an application to the state board for
      certification of a device, represent,— any device as a motor vehicle
      pollution control device for use on any used motor vehicle unless
      that device has been certified by the state board. No person shall
      sell, offer for sale, advertise, or represent any motor vehicle °
      pollution control device as a certified device which, in fact, is
      not a certified device.   Any violation of this subdivision is a
      misdemeanor."                .

 Any apparent violation of the conditions of this Executive Order will be
 submitted to the Attorney General of California for such action as he
 deems advisable.

 Executed at Sacramento, California, this   [ Z 66 dayof April, 1978.

                                     Thomas C. Austin
                                     Deputy Executive Officer

                           State 6f California
                           AIR RESOURCES BOARD
                             March 28, 1978

                              Staff Report

                    Evaluation of Mi]eage Minder Co.
               "Mileage Minder" Device in Accordance with     .
      Section 2222, Title 13. of the California Administrative Code

      Introduction                       .

      On August 23, 1977, the Air Resources Board (ARB) notified

      Mileage—Minder Co., 2999 Mission Street, San Francisco, CA       94110,

      that their advertisement of the "Mileage Minder" pressure regulator

      may be in violation of the California Vehicle Code Section 27156

      and the company was requested to apply for an exemption from the

      prohibitions of this law as.provided-in Section 2200 of Title 13

      of the California Administrative Code.      ©The company claimed by

      letter dated October 10;, 1977, that the governing regu]afion was

      not applicable to its "Mileage Minder" device.      Two devices were

      submitted to ARB for evaluation.       Pursuant to Section 2224(b) of
      Title— 13, of the California Administrative Code, the ARB conducted

      tests on the "Mileage Minder" device to determine compliance with

      the requirements of Section 27156 of the California Vehicle Code,

II.   System Description

      The "Mileage Minder"—device is a fue!l pressure regulator installed

      between the fuel pump and carburetor.      The applicant claims the

device is designed to maintain thé proper fuel fldw to the

carburetor at the optimum pressure..   By regu]atfng the supply

pressure it is claimed that a morfi uniform— level of fuel can be

maintained in the carburetor float bow! over the range of operating

conditions of the vehicle, thereby enabling better air fuel ratio


The device consists of a main upper brass metal housing and lower

glass container.   The upper housing contains the fuel inlet and

outlet, vacuum port fér connection to the intake manifold, ball

valve, and spring loaded diaphragm, that regulates the opening and

closing of the valve. The lower glass container holds the fuel,

a highly sensitive porous filter, and a ferrite maénet_that attracts

metal particles that escape the fi1ter.

The device modulates the fuel pressure by the action of intake

manifold vacuum on the diaphragm which regulates the opening.and

closing of the valve.   Dufing high manifold vacuum the spring

Toaded—diaphragm partially closes the valve causing'the reduction of

outlet fuel pressure.   At low manifold vacuum, the valve opens

thereby causing the fuel to—return to normal pressure.

III. System Evaluation             |      ;
    The ARB Laboratory evaluation of the device consisted of parametric

    pressure tests at>different engine speed and loading conditions to

    determine the effect of the "Mi]eége Minder"® device on a typical

    carburetor.    The purpose was to identify any abnormal fuel delivery

    conditions whic?éouid adversely affect exhaust emissions.

    Tests were conducted on a 1976 Canadian Ford 302—2V, non—catalyst

     engine installed on an engine dyno test stand.     Steady state tests

    were performedat idle, 1,000, 2,000, and 2,500 rpm with the engine

     loaded at 25%, 50% and maximum torque at each speed setting.      Fuel

     flow rates and manifold vacuum were measured and compared to baseline

     data.>   Table I summarizes the pertinent tesf data.

    ‘The test results show that the deviqe reduced the output fuel

     pressure from 5.5 psig to about 2 psig at most of the engine operating

     conditions except at.very low manifold vacuum— conditions.     At wide

     open throttle, the output fuel pressure did not change.      At any

     particular combination of engine'speed and loading condition, the

     reduction of fuel output pressure due to the instaT]atiop of the

     device did not change the fuel flow rate except at idle which was

     reduced by 10%.     This indicates the device pressure regulation down

     to 2 psig will not significantly change the .air fuel mixture, and

     consequently will not have any adverse effect on exhaust emissions.

IV.   Manufacturer‘s Claims

      The manufacturer claims the installation of the "Mileage Minder"

      device on vehicles will improve fuel economy.

      It is ihe staff‘s opinion that reducing the fuel supply pressure

      under non—critical operating modes causes a slight depression in

      the fuel level of the carburetor float bow1.    This cofi]d re$u1t in

      a slight leaning of the air/fuel ratio and may cohtribute to slight

      improvement in fuel economy.    <Our previous tests on similar pressure

      regulators showed a slight 1mprdvement in fuel economy of certain

      vehicles listed. 1 Howevér, the reduction in fuel consumption was :

      minimal and would not jJustify the cost of such a device for many

      vehicle applications.

V.    Conclusion and Recpmmendation

      Based on the discussion presented herein, it is the staff‘s opifiion

      that the insta]]atiofi of the "Mileage Minder" pressure regulator

      will not adversely affect the vehicle exhaust emissions.    Therefore,

      the staff recomendsnthat "MiTeage Minder" devi;e be granted an

      exemptjon from the prohibitions of California VehicTe Code $ection

      27156 for its "Mileage Minder" device for 1978 and older gasoline—

      powered vehicles.

]Evaluation of Cagle Corporation "Cagle Automatic Fuel Control" Device

 for Compliance with the Requirements of Section 27156 of the Vehicie

 Code, dated May 27, 1976.


Engine Speed (RPM)                 900                1000 —                   2000                   2500

% of Max. Torque                   tdte [     2s | so          100   2s          so     100|   2s      so|   100

Mileage Minder          BaseTine   5.8        5.8       5.8    5.5   5.8        5.6     4.7    5.6   $5.4    4.3

Output Pressure
(PSIG)            .     Device     as         ofae      |zra   sc    bzro       |zre    sal    20{2a         4s

Manifold Vacuum _     | Baseline   is        —[13.2     |10.4] 0     is fao.g|o.6 fs.4 fio.s|                123
(In. Hg.)               Device     15 0      fiz.e      |ro.2}f o    fas.a|ro.7|o.s fis.3a           |10.6   123

Fuel Flow     —         Baseline   0.9        |1.2       1.4f es      |     s.0|   s.a[gl4       .8     7.3
(gm/sec.) .             Device     o.s      Cfinzl]      nal2as       fo.a|      s.o|   s.o|rae       3.8    7.4

Document Created: 2005-09-01 12:40:44
Document Modified: 2005-09-01 12:40:44

| Previous E.O. D-79 | Next E.O. D-80-1 | Next E.O. D-81