Approval Details

Valid E.O.


This Executive Order approved the specified parts on on January 27, 2004.
As of Wednesday, October 16th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsRemarks
D360-65102000-2003 BMW Z8 4.9LThe Dinan Header System is a pair of long tube headers manufactured out of 16 gage stainless steel. The headers are designed in the configuration of 4:2:1. The oxygen sensor remains in the stock location at the collector of the exhaust system.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-176-24
  • Executive Order 176-24 / D176-24
  • ARB # D-176-24
  • Executive Order No: D-176-24
  • C.A.R.B. No. D-176-24
  • Resolution D-176-24
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-176-24 PDF

D-176-24 Document:

                                       State of California
                                   AIR RESOURCES BOARD

                                 EXECUTIVE ORDER D—176—24

                         Relating to Exemptions Under Section 27156
                                      of the Vehicle Code

                                     DINAN ENGINEERING
                                       HEADER SYSTEM

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—02—003;

IT IS ORDERED AND RESOLVED: That the instailation of the Header System,
manufactured and marketed by Dinan Engineering, Inc., 865 Jarvis Drive, Morgan View,
California 95037 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 installation on the following BMW vehicle applications:

Model        Model            Engine PartNo.

28           2000—2003            4.9L       D360—6510
MS           2000—2003            4.9L       D360—6500

The Dinan Header System is a pair of long tube headers manufactured out of 16 gage
stainless steel. The headers are designed in the configuration of 4:2:1. The oxygen sensor
remains in the stock location at the collector of the exhaust system.

This Executive Order is valid provided that the installation instructions for the Header System
will not recommend tuning the vehicle to specifications different from those of the vehicle

This Executive Order shall not apply to any Dinan Engineering, Inc. Header System
advertised, offered for sale, or sold with or installed on a motor vehicle prior to or concurrent
with transfer to an ultimate purchaser.

Changes made to the design or operating conditions of the Header System, 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 Header System using any identification other than that shown in this
Executive Order or marketing of the Header System for an application other than those listed
in this Executive Order shall be prohibited unless prior approval is obtained from the Air
Resources Board.

This Executive Order does not constitute any opinion as tothe effect the use of the Header
System 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
2000 model-year BMW MS certified to the Transitional Low Emission Vehicle (TLEV)
emission standards. Testing consisted of one Cold Start CVS—75 Federal Test Procedure
with the Header System installed. The vehicle in the modified configuration met the
applicable emission standards using an NMOG RAF of 0.98 and a deterioration factor
prorated to the test vehicle‘s mileage of 25,467.

                           50K Standards                      100K Standard

                  NMOG CO         NOx     HCHO        NMOG CO          NOx     HCHO
Standard          0.125 3.4       0.4     0.015      0156 4.2         0.6      0.018
Device w/dfs      0.122 1.5       0.1 _   0.011      0.139 1.9       0.1       0.016

This Executive Order is also based on the On Board Diagnostic II (OBD I1) testing cohducted
on the same vehicle. Test data showed that the Header System when installed on the
vehicle did not affect the vehicle‘s ability to perform its OBD II monitoring.

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.


No clair 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 Z/7 day ofJanuary 2004.

                                   AlI%yons, Chief
                                   Mobile Source Operations Division

                   DINAN ENGINEERING — HEADER SYSTEM — D—176—24

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

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