Approval Details

Valid E.O.


This Executive Order approved the specified parts on on December 14, 1994.
As of Sunday, October 20th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
5115, 5115-II1986-1995 Ford Passenger Cars 5.0L

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-266-4
  • Executive Order 266-4 / D266-4
  • ARB # D-266-4
  • Executive Order No: D-266-4
  • C.A.R.B. No. D-266-4
  • Resolution D-266-4
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-266-4 PDF

D-266-4 Document:

                                                (Page 1 of 2)

                               State of California
                              AIR RESOURCES BOARD

                            EXECUTIVE ORDER D—266—4
                   Relating to Exemptions Under Section 27156
                               of the Vehicle Code

                          NITROUS OXIDE SYSTEMS, INC.
                          NITROUS OXIDE INJECTION KITS
Pursuant to the authority vested in the Air Resources Board (ARB) 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 G—45—5;

IT IS ORDERED AND RESOLVED:       That the installation of the Nitrous Oxide
Injection kits manufactured by Nitrous Oxide Systems, Inc. has been found
not to reduce the effectiveness of required motor vehicle poliution control
devices and, therefore, is exempt from the prohibitions of Section 27156 of
the Vehicle Code for the following vehicles:
Application                   Engine Displacement                     Kit#

1986—95 Ford passenger cars           5.0L                      5115 or 5115—I1
1992—95   Corvette                    5.7L    LT—1                    5174
1993—95   Camaro/Firebird             5.7L    LT—1                    5176
1990—95   Corvette                    5.7L    ZR1l                    5172
1993—95   Dodge trucks                5.2L                            5178
1987—95   General Motors trucks       5.7L                            5153
1987—95   General Motors trucks       7 .4L                           5153—454
1993—95   Dodge YViper                8. 0L                           5180

All Nitrous Oxide Injection kits must be wide open throttle active which is
detected by interfacing a wide open throttle relay module.

This Executive Order is valid provided that installation instructions for
the Nitrous Oxide Injection kits will not recommend tuning the vehicle to
specifications different from those submitted by the device manufacturer.
Changes made to the design or operating conditions of the device, as
exempted by the ARB, that adversely affect the performance of a vehicle‘s
pollution control 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 prohibited unless prior
approval is obtained from the ARB.

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

This Executive Order is granted based on an engingering evaluation which
shows that emissions are not affected during the Cold—Start CVS—75 Federal
Test Procedure. However, the ARB finds that reasonable grounds exist to
believe that use of the Nitrous Oxide Injection kits may adversely affect
emissions of motor vehicles when operating under conditions outside the
parameters of the previously prescribed test procedures. Accordingly, the

NITROUS OXIDE SYSTEMS, INC.                         EXECUTIVE ORDER D—266—4
                                                    (Page 2 of 2)

ARB reserves the right to conduct additional emission tests, in the future,
as such tests are developed, that will more adequately measure emissions
from all cycle phases. If such test results demonstrate that the Nitrous
Oxide Injection kits adversely affect emissions during off—cycle conditions
{defined as those conditions which are beyond the parameters of the Cold—
Start CVS—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 Nitrous Oxide Injection kits will affect the durability
of the emission control system, Nitrous Oxide Systems, Inc. shall be
required to submit durability data to show that the durability 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
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.

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

Section 43644 of the Health 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
       poliution 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 may result
in its rescission or submission to the Attorney General of California for
such action as he deems advisable.

The Bureau of Automotive Repair will be notified    by copy of this order.

Executed at El Monte, California, this    /@%fifiéa

Document Created: 2005-09-01 12:40:31
Document Modified: 2005-09-01 12:40:31

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