Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on June 24, 1992.
As of Sunday, September 22nd, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
PP-69021983-1992 Ford E and F series vehicles with Ford/Navistar 6.9L /7.3L diesel engines

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-255
  • Executive Order 255 / D255
  • ARB # D-255
  • Executive Order No: D-255
  • C.A.R.B. No. D-255
  • Resolution D-255
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-255 PDF

D-255 Document:



                                                      (Page 1 sf 2)

                              State of California
                              AIR RESOURCES BOARD

                              EXECUTIVE ORDER D—255
                 Relating to Exemptions Under Section 27 56
                               of the Vehicle Code

                             RW PRODUCTS, INC.
                      PARABOLIC AIR MANAGEMENT INSERT

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

Pursuant to the authority vested in the undersigned by Sections 39515 and
39516 of the Health and Safety Code and Executive Order 6—45—5;

IT IS ORDERED AND RESOLVED:     That the installation of the Parabolic Air
Management Insert, manufactured by RW Products, Inc., of 1313 Touby Pike,
P. 0. Box 804, Kokomo, Indiana, 46903—0804, has been found not to reduce the
effectiveness of the applicable vehicle pollution control system and,
therefore, is exempt from the prohibitions of Section 27156 of the Yehicle
Code for installation on the following vehicles:

     A. Mode] No. PP—6902 for 1983—1992 model—year For& E— and F—Series
          vehicles equipped with the Ford/Navistar 6.9/7.3L diesel engine.

     B. Model No. PP—6202 for 1982—1987 model—year Gengral Motors (GM)
          heavy—duty vehicles equipped with "J"—series§6.2L HD diesel
          engine. Also applicable for 1988—1991 modeliyear GM heavy—duty
          vehicle equipped with "J"—series 6.2L HD d1eie} engine wzth the
          early—model dual—plane, 180—degree intake manifold.

     C. Model No. PP—6207 for 1988—1987 model—year GM Aeavy-duty vehicles
          equipped with "J"—series 6.2L HD diesel engine. Also applicable
          for 1988—1991 model—year heavy—duty vehicle equ1pped with "J"~
          series 6.2L HD diesel engine with the late— model single—plane,
          360—degree intake manifold.

This Executive Order is valid provided that installation instructions for
this Parabolic Air Management Insert will not recommend tuning the vehicle
to specifications different from those submitted by RWiProducts, Inc.

Changes made to the design or operating conditions of the Parabolic Air
Management Insert,; as exempt by the Air Resources Board {ARB), which
adversely affect the performance of a vehicle‘s po]lut!on control system
shall invalidate this Executive Order.

Marketing of this Parabolic Air Management Insert, using an identification
other than that shown in this Executive Order or marketing of this Parabolic
Air Management Insert, for an application other than those listed in this
Executive Order shall be prohibited unless prior approval is obtained from
the ARB.


RW PRODUCTS, INC.                                 EXECUTIVE ORDER D—255
PARABOLIC AIR MANAGEMENT INSERT                   (Page 2 of 2)


This Executive Order is granted based on a determination that the device
would not show an adverse effect in emissions if tested using the Cold—Start
CVS—75 Federal Test Procedure. However, the ARB finds that reasonable
grounds exist to believe that use of the Parabolic Air Maragement Insert may
adversely affect emissions of motor vehicles when operating under conditions
cutside the parameters of the previously prescribed test procedures.
Accordingly, the ARB reserves the right to conduct emissisn tests, in the
future, as such tests are developed, that will more adequstely measure
emissions from all cycle phases.  If such test results demonstrate that the
Parabolic Air Management Insert adversely affects emissions during off—cycle
conditions (defined as those conditions which are beyond the parameters of
the Cold—Start CYS—75 Federal Test Procedure), this Executive Order shall be
effectively rescinded as of the date the test results are validated.
Further, if such test results or other evidence provides the ARB with reason
to suspect that the Parabolic Air Management Insert will affect the
durability of the emission control system, RW Product, Inc. shall be
required to submit durability data to show that the duratility of the
vehicle emission control system is not, in fact, affected and/or that the
add—on or modified part demonstrates adequate durability.

In addition to the foregoing, the ARB reserves the right in the future to
review this Executive Order and the exemption provided herein to assure that
the exempted add—on or modified part continues to meet the standards and
procedures of Title 13, California Code of Regulations, Section 2222 et seq.

This Executive Order does not cons%itute any opinion as to the effect the
use of this Parabolic Air Management Insert, may have on any warranty either
expressed or implied by the vehicle manufacturer.
                                  |


THIS EXECUTIVE ORDER DOES NOT CONS&ITUTE A CERTIFICATION, ACCREDITATION,
APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESQURCES BOARD OF
CLAIMS OF THE APPLICANT CONCERNING| ANTI—POLLUTION BENEFITS OR ANY ALLEGED
BENEFITS OF RW PRODUCTS, INC. PARABOLIC AIR MANAGEMENT IKSERT.

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

Violation of any of the above conditions shall be grounds for revocation of
this order.  The order may be revoked only after ten day written notice of
intention to revoke the order, in which period the holder of the order may
request in writing a hearing to contest the proposed revocation.      If a
hearing is requested, it shall be held within ten days of receipt of the
request and the order may not be revoked until a determination after the
hearing that grounds for revocation exist.     )fifL__

Executed at E1 Monte, California, this Cf?sc     y Of   June, 1992.



                                                             /
                                       R. 4. Summerfield *
                                       Assistant Division Chief
                                       Mobile Source Division


                      State of California
                      AIR RESOURCES BOARD




EVALUATION OF RW PRODUCTS, INC.‘S PARABOLIC AIR MANAGEMENT INSERT
        FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
    SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF
                THE CALIFORNIA CODE OF REGULATIONS




                           June 1992


                           State of California
                           AIR RESOURCES BOARD




     EVALUATION OF RW PRODUCTS, INC.‘S PARABOLIC AIR MANAGEMENT INSERT
             FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
       SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE
                       CALIFORNIA CODE OF REGULATIONS




                                     by
                           Mobile Source Division
                            State of California
                            Air Resources Board
                            9528 Telstar Avenue
                          E1 Monte, CA 91731—2990




(This report has been reviewed by the staff of the California Air Resources
Board and approved for publication. Approval does not signify that the
contents necessarily reflect the views and policies of the Air Resources
Board, nor does mention of trade names or commercial products constitute
endorsement or recommendation for use.)


                                  SUMMARY



       RW Products, Inc., of 1313 Touby Pike, P.0. Box §04, Kokomo, Indiana,

46903—0804 has applied for an exemption from the prohibitions in Section 27156

of the California Vehicle Code (VC) for their Parabolic Air Management Insert.

The Parabolic Air Management Insert is designed for installation on the

following vehicles:

       A. Model No. PP—6902 for 1983—1992 model—year Ford E— and F—Series

          vehicles equipped with the Ford/Navistar 6.9/7.3L diesel engine.

       B. Model No. PP—6202 for 1982—1987 model—year General Motors (GM) heavy—

          duty vehicles equipped with “J";series 6.2L HD diesel engine.     Also

          applicable for 1988—1991 model—year GM heavy—duty vehicle equipped

          with "J"—series 6.2L HD diesel engine with the early—mode? dual—

          plane, 180—degree intake manifold.

       C. Model No. PP—6207 for 1988—1987 model—year GM heavy—duty vehicles

          equipped with "J"—series 6.2L HD diesel engine.    Also applicable for

          1988—1991 model—year heavy—duty vehicle equipped with "J"—series 6.2L

          HD diesel engine with the late—model single—plane, 360—degree intake

          manifold.

       RW Products has submitted a complete application and all the required

information including samples of the individual models.     Based on an

engineering evaluation, it was determined that the Parabolic Air Management

Insert would not have any significant adverse effects in emissions if tested in

accordance with the Cold—Start CVS—75 Federal Test Procedure.

       The staff recommends that RW Products, Inc.   be granted exemption as

requested and that Executive Order D—255 be issued for the Parabolic Air

Management Insert,; model numbers PP—6902, PP—6202, and PP—6207.

                                        i


                                      ABLE OF CONTENTS



                                                                Page Number



SUMMARY                                                                  i
CONTENTsS                                                               15
I.        INTRODUCTION                                                   1
II.       CONCLUSION                                                     2
III.      RECOMMENDATION                                                 2
IV.       DEVICE DESCRIPTION                                             2
v.        PARABOLIC AIR MANAGEMENT INSERT EVALUATION AND DIsCcUssION     3
          APPENDIX                                                       4
          APPENDIX A:      INSTALLATION INSTRUCTIONS                   A—1
          APPENDIX B:    DRAWINGS                                      A—2




                                            11


       EVALUATION OF RW PRODUCTS, INC.‘S PARABOLIC AIR MANAGEMENT INSERT
              FOR EXEMPTION FROM THE PROHIBITIONS OF YEHICLE CODE
        SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE
                       CALIFORNIA CODE OF REGULATIONS
I.     INTRODUCTION

       RW Products, Inc., of 1313 Touby Pike, P.0. Box 804, Kokomo, Indiana,

46903—0804 has applied for an exemption from the prohibitions in Section 27156 —

of the California Vehicle Code (VC) for their Parabolic Air Management Insert.

The Parabolic Air Management Insert is designed for installation on the

following vehicles:



      A. Model No. PP—6902 for 1983—1992 model—year Ford E— and F—Series

          vehicles equipped with the Ford/Navistar 6.9/7.3L diesel engine.



       B. Model No. PP—6202 for 1982—1987 model—year General Motors (GM) heavy—

          duty vehicles equipped with "J"—series 6.21 HD diesel engine.    Also

          applicable for 1988—1991 model—year GM heavy—duty vehicle equipped

          with "J"—series 6.2L HD diesel engine with the early—mode?! dual—

          plane, 180—degree intake manifold.



       C. Model No. PP—6207 for 1988—1987 model—year GM heavy—duty vehicles

          equipped with "J"—series 6.2L HD diesel engine.   Also applicable for

          1988—1991 model—year heavy—duty vehicle equipped with "J"—series 6.2L

          HD diesel engine with the late—model single—plane, 360—degree intake

          manifold.



       RW Products has submitted a complete application and all the required

information including samples of the individual models.


II.    CONCLUSIONS
       Based on an engineering evaluation of the operating principles of the RW

Products Parabolic Air Management Insert, the staff conciudes installation of

the RW Products Parabolic Air Management Insert will not adversely affect

exhaust emissions, if tested in accordance with the Cold—Start CVS—75 Federal

Test Procedure, from vehicles for which an exemption is requested.



III.    RECO          TION

       The staff recommends that RW Products, Inc. be granted exemption as

requested and that Executive Order D—255 be issued for the Parabolic Air

Management Insert model numbers PP—6902, PP—6202, and PP—6207.



IV.            CE_D     IPTIO

       The Parabolic Air Management Insert is a vehicle—specific component used

to increase air flow through the siock/factory'intake manifold in conjufiction

with the stock—type air cleaner.          It is a circular, sand—cast aluminum disk of

varying thickness from 0.750 to 1.000 inches depending upon the application

(see drawing in Appendix A).          (It is constructed using approximately 0.80 Ibs.

of 319 aluminum alloy.          The inner surface matches the contours of the factory

intake manifold, with edges designed with radial flow surfaces to reduce

turbulence.

       The insert is tumbled for deburring and to minimize the need for

additional machining.        Additional machining is performed on some versions to

maximize fit integrity.         Holes are provided for hold—down bolts to secure the

insert and the air cleaner base to the intake manifold.          The top surface

provides a smooth surface for airflow free from vertical or side—wall induced

turbulence.


v.       R       AIR   M        T INSERT
      An engineering evaluation was conducted to evaluate the impact of the

Parabolic Air Management Insert on emissions.

        The manufacturer claims the Parabolic Air Management Insert provides a

"smooth" opening for the intake air to flow through.     In comparison, the stock

intake opening has squared corners and protruding lips inducing turbulence

characterized as vortexes.    This turbulence reduces the effective flow area

causing a reduced theoretical flow through the opening.     Therefore, the

Parabolic Air Management Insert is designed to increase the effective flow area

through the intake opening, thereby, slightly increasing the amount of air

drawn into the cylinders.     However, diesel engine‘s fuel metering is

mechanically controlled independent of the air flow.     Therefore, diesel engines

operate on a wide range of air/fuel ratios and are inherently insensitive to

small air flow changes.     Based on these diesel engine characteristics, staff

has determined the Parabolic Air Management Insert will not increase emissions.


     APPENDIX
N_


APPENDIX A:


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      Using extreme         caution,    replace the ingpection cover                         and
      rubber @amket on the exterior of the pump.

      Clean any excese or spilled fuel in the engine compartment.
      Reconnect the throttle ligkage csable and akl1 electrical
      connections to the pump.


                       Air Cleaner Assembly Installation

Safety Instructions:

      Use care when removing the stock air                       cleaner apperatus
      from the top of the air cleaner base.    Dirt and debris
      which may be préesent in the compartment should be kept
      away from the opening            into the manifold.

Mechanical    Instructions‘

4.    Remove the stock air          intake           flex
     duct which is       located on the right—
      front position of the air cleaner                                        ~.
      base.
                                                                          :
     Loosen the factory @air cleaner bolt
     and remove the air cleaner sssembly                                                           \
     (base, filter, and lid) from the top                                      —                    \
     of the intake manifoid.                                                                        }

     . Away from the vehicle,          thoroughly
     clean the inside of the air cleaner
     base

     Remove and retain the rubber grom—
     met from the stock sir cloaner lid.
     This will be used with the aluminum
     Power Plus Mk T1 replacement lid.

     In some late model vehicles, an air
     restrictor plate will be prement on
     the inside of the air cleaner base.
     This must be removed for proper
     installation of the Rey—Wel Power
     Plus Mk 11   This can be done by
     using a small spot—weld remover
     (See Fig.   4},    common to most repair
     §farages.  The use of a 5/16" Rota—                                           Fig.      4
     broach is recommended {aveilable from
     local parts   suppliers         — Snap—On,             Matco,
     eto }).

     After removing this plate, if applicable, carefulily replace
     the air cleaner base on the top of the inteke manifold.

     Using two concurrent 3/8" (NCT) hex nuts. install the Air
     manager insert (PP—6902) and insert stud (PP—6904) sabove

                                                                                                                lcour


                                 RH     Products.       Inc.           zir4eselrTez              r.




                                                                                                  &
                                                                                                      O
                                                                         =i
          the stock manifold screen              (meahed).      When   tightened      to   the
          manifold,.    remove the two bex nuts —— allowing for the                        in—
          stallation     of the air cleaner             lid.   See Fig.       5

 ** NOTE «*
       Orient the insert so that its configuration is mirrored by
       the manifold opening.   Tig@hten the insert stud onto the mani—
       fold using extreme caution.     The application of excessive torque
       scould result in the breakags or fragmentation of the insert



       Install the rubber grommet
o




       (removed from the stock lid)
       into the stud bhole in the
       bottom of the air cleaner
       11id
      +




       Place the pre—ciled K&N sir
       filter (AF—E6801) element on
       the air cleaner base.    The
       air filter element will rest
       uniformly on the base and
       will be secured by the air
       nleaner lid (Fig. 5}.

      Place the air cleaner              lid
       (PP—6801) on top of the filter
      element and air cleaner base
      (Fig. 5)   A twisting sotion
      may be required to manipulate
      the    insert stud through the
      rubber frommet        on    the    lid.

      Secure the        lid to the base by
      using the        forged    3/8"    wingnut
      (AC—6903 )  Tighten the wing—
      nut only finger—tight.   Ex—
      cess pressure on this component
      may    cause damefe to the wingnut
      or insert stud (PP—6904).

12    To finsalize air cleaner asgsom—
      bly, reinstall the air intake
      flex duct onto the nozssle of
      the air cleaner bage, and check
      all connactions for proper fit.




     NOTE    sor
      If air cleaner lid (PP—6901)                 fails
      to seat properiy on bases,                check
     the underside gasket             for debris.


APPENDIX B:


|   * ‘PARABOLIC AIR
      MANAGER INSERT


                        FORD   6.9/7.3L




CCC   " PARABOLIC AIR
      MANAGER INSERT



Document Created: 2005-09-01 12:40:34
Document Modified: 2005-09-01 12:40:34

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