Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on June 16, 1999.
As of Sunday, August 25th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

ModelsModification
1999 General Motors trucks equipped with a 4.8, 5.3, or 6.0 liter engineThe 2000 Series Headers is a pair of long tube style headers and a connecting Y pipe manufactured out of 14 gage coated mild steel tubing. The location of the oxygen sensor is at the collector in the connecting pipe, similar to the stock configuration.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-484
  • Executive Order 484 / D484
  • ARB # D-484
  • Executive Order No: D-484
  • C.A.R.B. No. D-484
  • Resolution D-484
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-484 PDF

D-484 Document:



                                                                                             (Page 1 of 2)

                                                State of California
                                            AIR RESOURCES BOARD


                                           EXECUTIVE ORDER D—484
                                    Relating to Exemptions Under Section 27156
                                                 of the Vehicle Code


                                           MIKE HAMM ENGINEERING
                                         PERFORMANCE HEADER SYSTEM
                                               PART NO. 2010—C


 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 Section 39515 and Section 39516 of the Health and
 Safety Code and Executive Order G—45—9;

 IT IS ORDERED AND RESOLVED: That the installation of the 2000 Series Headers, manufactured and
 marketed by Mike Hamm Engineering, Inc., 7591 Acacia Avenue, Garden Grove, California 92841 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 Vehicle Code for 1999 General Motors trucks equipped
 with a 4.8, 5.3, or 6.0 liter engine.

 The 2000 Series Headers is a pair of long tube style headers and a connecting Y pipe manufactured out of 14
 gage coated mild steel tubing. The location of the oxygen sensor is at the collector in the connecting
 pipe, similar to the stock configuration.

  This Executive Order shall not apply to any Mike Hamm Engineering, Inc. 2000 Series Headers advertised,
  offered for sale, or sold with or installed on, a motor vehicle prior to or concurrent with transfer to an ultimate
_ purchaser.

 This Executive Order is valid provided that the installation instructions for the 2000 Series Headers will not
 recommend tuning the vehicle to specifications different from those of the vehicle manufacturer.

 Changes made to the design or operating conditions of the 2000 Series Headers, as exempt by the Air
 Resources Board, which adversely affect the performance of the vehicle‘s pollution control system shall
 invalidate this Executive Order.

 Marketing of the 2000 Series Headers using any identification other than that shown in this Executive Order
 or marketing of the 2000 Series Headers for an application other than those listed in this Executive Order shall
 be prohibited unless prior approval is obtained from the Air Resources Board. Exemption of the 2000 Series
 Headers shall not be construed as exemption to sell, offer for sale, or advertise any component of the kit as an
 individual device.                                 |

 This Executive Order does not constitute any opinion as to the effect the use of the 2000 Series Headers may
 have on any warranty either expressed or implied by the vehicle manufacturer.

 This Executive Order is granted based on the following submitted emissions test data on a 1999 General
 Motor C1500 truck equipped with a 5.3L engine and certified to a Low Emission Vehicle (LEV) emission
 standard:

                        NMOG       CO       NOX      HCHO
 Standards              0.160      4.4      0.4      0.018
 device w/ dfs          0.033      0.7      0.1      0.002


xm




     MIKE HAMM ENGINEERING                                                     Executive Order D—484
     2000 Series Headers                                                       (Page 2 of 2)




     Test results showed that tailpipe emissions with the 2000 Series Headers installed on the vehicle met the
     vehicle‘s applicable emission standards during Cold Start CVS—75 Federal Test Procedure. This Executive
     Order is also based on On Board Diagnostic II (OBD II) testing conducted on the same test vehicle. Test data
     showed that the 2000 Series Headers when installed on the vehicle did not affect the vehicle‘s ability to
     perform its OBD II monitoring.

     THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION,
     APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESOURCES BOARD OF
     ANY CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY
     ALLEGED BENEFITS OF MIKE HAMM ENGINEERING‘S 2000 SERIES HEADERS.

     No claim of any kind, such as "Approved 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 a 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
     hearing that grounds for revocation exist.

     Executed at El Monte, California, this     _/ é    day of    Jmne 1999.




                                              R. B.    Summerfield, Chief
                                              Mobile Source Operations Division


                                             State of California
                                         AIR RESOURCES BOARD




              EVALUATION OF MIKE HAMM ENGINEERING 2000 SERIES HEADERS
                FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
             SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE
                            CALIFORNIA CODE OF REGULATION®S




                                                   June 1999




                                                       by
                                      Mobile Source Operations Division
                                            9528 Telstar Avenue
                                             El Monte, CA 91731




(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




             Mike Hamm Engineering, Inc. of 7591 Acacia Avenue, Garden Grove, California 92841 has

applied for an exemption from the prohbibitions in Section 27156 of the California Vehicle Code (VC) for their

2000 Series Headers designed for 1999 General Motors trucks equipped with a 4.8, 5.3, or 6.0 liter engine.

             Based on submitted emissions test data, the staff concludes that the 2000 Series Headers will not

adversely affect exhaust emissions from the vehicles for which the exemption is requested.

             The staff recommends that Mike Hamm Engineering, Inc. be granted an exemption as requested

and that Executive Order D—484 be issued.


                                       TABLE OF CONTENTS




                                                           Page Number




         SUMMARY

         CONTENTS                                              11

         L. INTRODUCTION

         II. CONCLUSION

         III. RECOMMENDATION

         IV. 2000 SERIES HEADERS DESCRIPTION

         V. PISCUSSION OF THE 2000 SERIES HEADERS
codrs.




                                                1i


              EVALUATION OF MIKE HAMM ENGINEERING 2000 SERIES HEADERS
               FOR AN EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
             SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE
                            CALIFORNIA CODE OF REGULATIONS


I. INTRODUCTHION

             Mike Hamm Engineering, Inc. of 7591 Acacia Avenue, Garden Grove, California 92841 has

applied for an exemption from the prohibitions in Section 27156 of the California Vehicle Code (VC) for their

2000 Series Headers designed for 1999 General Motors trucks equipped with a 4.8, 5.3, or 6.0 liter engine.

IIL CONCLUSIONS

             Based on submitted emissions test data, the staff concludes that Mike Hamm Engineering, Inc.‘s

2000 Series Headers will not adversely affect exhaust emissions from the vehicles for which the exemption is

requested.

III. RECOMMENDATION

             The staff recommends that Mike Hamm Engineering, Inc. be granted an exemption for their

2000 Series Headers for installation on those applicable vehicles specified above. The staff also recommends

that Executive Order D—484 be issued.

IV. 2000 SERIES HEADERS_DESCRIPTION

             The 2000 Sefies Headers is designed for installation on 1999 General Motors trucks equipped

with a 4.8, 5.3, or 6.0 liter engine. The purpose of the device is to increase the vehicle‘s performance and

power output by allowing more air to flow out of the engine‘s combustion chamber with less restrictions.

             The original exhaust manifold is a one piece cast iron manifold with variable port and chamber

diameters. The manufacturer claims the tube diameter of the header is constant with no bottlenecks to create

back pressure; thereby enhancing exhaust flow. All other characteristics of the OEM manifold are similar

including the mounting of the header at the engine block and connecting pipes, and the placement of the

oxygen sensor at the collector of the header. The header operates in conjunction with the OEM emission

control systems already certified with the stock engine. The 2000 Series Headers does not defeat any emission

control devices required by the manufacturer nor does it alter or circumvent the vehicle‘s On—Board Diagnostic

II system or tune—up specifications.


v.            DISCUSSION OF THE 2000 SERIES HEADERS

              A 1999 General Motors C1500 Truck with a 5.3 liter engine, certified to a Low Emission

 Vehicle (LEV) emission standard, was used for the evaluation of the headers. The dynamometer inertia

 weight and loading were 5500 lbs. and 17.3 hp. respectively. Emissions testing was conducted by California

 Analytical Instruments, Inc. (CAT).

              Emissions testing conducted by CAI consisted of one Cold—Start CVS—75 Federal Test Procedure

 in the modified (2000 Series Headers installed) configuration. The Air Resources Board did not perform tests

—to confirm the test results submitted by the applicant. A sumrhaxy of the test results is shown below:

                                         Exhaust Emissions Test Results
                                           On a 1999 5.3L GM Truck

 Test Mode                      NMOG                     _CO                     NOx             HCHO
 Standard                       0.160                    4.4                     0.4             0.018
 Device w/ dfs                  0.033                    0.7                     0.1             0.002

              Results from the emission tests conducted at CAI show the vehicle emissions when the 2000

 Series Headers are installed to be within the vehicle‘s emission standards with deterioration factors applied.

 Based on the test results, the staff concludes that the installation of Mike Hamm Engineering, Inc.‘s 2000

 Series Headers will not have an adverse effect on exhaust emissions of the affected vehicles.

              The evaluation of the 2000 Series Headers on the vehicle‘s OBD II system was conducted by

 CAI. CAI indicated that a scan test displayed the vehicle‘s readiness monitors as complete and that no

 diagnostic trouble code were present.

               Mike Harom Engineering, Inc. has submitted all the required information and fulfilled the

 requirements for an exemption.



Document Created: 2005-09-01 12:39:36
Document Modified: 2005-09-01 12:39:36

| Previous E.O. D-483 | Next E.O. D-484-1 | Next E.O. D-485