Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on May 26, 2017.
As of Tuesday, December 18th, 2018 this Executive Order has not been overturned or superceeded.

Approved Parts

Part Number
see pdf

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-250-5
  • Executive Order 250-5 / D250-5
  • ARB # D-250-5
  • Executive Order No: D-250-5
  • C.A.R.B. No. D-250-5
  • Resolution D-250-5
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-250-5 PDF

D-250-5 Document:



                                     State of California
                                 AIR RESOURCES BOARD

                                EXECUTIVE ORDER D—250—5

                        Relating to Exemptions Under Section 27156
                                   of the California Vehicle Code

                               Air Flow Research Heads, Inc.
                          LS Cylinder Heads, P/Ns 1840 and 1845

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—14—012;

IT IS ORDERED AND RESOLVED: That the installation of the LS Cylinder Heads,
manufactured and marketed by Air Flow Research Heads, Inc., 28611 Industry Drive,
Valencia, California 91355, has been found not to reduce the effectiveness of the
applicable vehicle pollution control systems and, therefore, is exempt from the prohibitions
of Section 27156 of the Vehicle Code for all vehicles equipped with a 2007 to 2016 model
year General Motors 6.2L LS engine.

The LS Cylinder Heads, P/Ns 1840 and 1845, is a set of new modified aluminum cylinder
heads, designed to increase the performance of the engine by having ported and
polished intake and exhaust ports, larger valve diameters, and a modified combustion
chamber volume. No other changes are required for proper installation other than the
remove and replacement of the cylinder head. Part number 1840 is a 6 bolt mount
cylinder head and part number 1845 is a 4 bolt mount cylinder head.

This Executive Order is valid provided that the installation instructions for the LS Cylinder
Heads will not recommend tuning the vehicle to specifications different from those of Air
Flow Research Heads, Inc.

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

This exemption is issued based on submitted emissions test data, from the SEMA Garage,
Diamond Bar, California, on a 2015 model year Camaro certified to the
LEV II ULEV emission standards and tested using the Cold—Start CVS—75 Federal Test
Procedure (FTP) test cycle, Highway Fuel Economy Test (HWFET), and the Supplemental
Federal Test Procedure (SFTP USO6/SC03 (AC2 test + 20%)) test cycle.

                                          CVS—75 FTP
                                  NMOG       CO    NOx              HCHO
Standards, UL                     0.070      2.1   0.04             0.011
Device Test                       0.064      14    0.03             0.002
(w/ df applied,
2 test avg)


                                          USO6/SCO3
                                NMHC+NOx          5O
Standards 4k                      0.14/0.20       8.0/2.7
Device                            0.03/0.04       0.21.4
                                                                    HWFET —      NOx
                                                                  Standard       0.05
                                                                  Device w/df    0.02

Test results showed that the LS Cylinder Heads when installed on the vehicle did not cause
exhaust emissions to exceed the applicable emission standards during the FTP and SFTP.
This Executive Order is also based on the On—Board Diagnostic II (OBD II) testing
conducted on the same test vehicle. The LS Cylinder Heads when installed on the test
vehicle did not affect the vehicle‘s ability to perform its OBD II monitoring.

The Air Resources Board 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 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 THE
LS CYLINDER HEADS.

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 is made after the
hearing that grounds for revocation exist.
                                      “/‘f

Executed at El Monte, California, this day of May 2017.



              77/%@/
                  Annette Hebert, Chief
                  Emlssmns Compliance, Automotive Regulations and Science Division




        AIR FLOW RESEARCH HEADS, INC. — LS CYLINDER HEADS — D—250—5



Document Created: 2017-07-14 16:56:45
Document Modified: 2017-07-14 16:56:45

Previous E.O. D-250-4 | Previous E.O. D-249 | Next E.O. D-250-6 | Next E.O. D-251