Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on June 25, 2008.
As of Tuesday, June 25th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
350-0101991-1996 NSX

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-637
  • Executive Order 637 / D637
  • ARB # D-637
  • Executive Order No: D-637
  • C.A.R.B. No. D-637
  • Resolution D-637
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-637 PDF

D-637 Document:



                                   State of California
                               AIR RESOURCES BOARD


                              EXECU-I-IVE ORDER D-637

                     Relating to Exemptions Under Section 27156
                                  of the Vehicle Code


                                   CT-Engineering
                            CT-Engineering Supercharger Kit

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

P~~rsuantto 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 CT-Engineering Supercharger
Kit manufactured and marketed by CT-Engineering of 3239 Monier Circle, Suite 5, Rancho
Cordova, CA 95742 has been found not to reduce ,the effectiveness of required motor vehicle
pollution control devices and, therefore, is exempt from the prohibitions of Section 27156 of the
California Vehicle Code for the Honda Motor Corporation vehicle applications listed in Exhibit A
(attached), excluding any vehicle certified to Low Emission Vehicle II Super Ultra Low
Emission Vehicle (LEV II SULEV) or lower emission standards.

The CT-Engineering Supercharger Kit includes the following main components: supercharger
compressor, CT-Engineering air intake box (52000 only), intake marlifold (NSX only), Walbro
fuel pump (S2000 except model year 2006)' larger fuel injectors (2006-2008 S2000 only) and
CT-Engineering fuel pressure regulator. For some vehicle models, the stock fuel pressure
regulators are replaced with higher-pressure CT-Engineering regulators. Others utilize an
add-on electronic timing calibrator (ACM) or reprogramming of the stock controller. Several
models' stock air intake boxes are replaced with the kit's smaller intake box in order to
accommodate the supercharger. The V-6 NSX and most 4-cylinder vehicle models' stock
intake manifolds are replaced with the combination supercharger and intake manifold
assembly. Some models also utilize a MAP sensor electronic signal modifier that prevents
excessive voltage signal when under boost conditions. This also replaces traditional vacuum         .
hose bypass systems. All other emission-related components are in the stock location relative
to the throttle body. The supercharger pulley diameters vary from 3.0" to 4.7." All crankshaft
pulleys are stock and maximum boost for all models is limited to 6 psi.

This Executive Order shall not apply to any CT-Engineering Supercharger Kit advertised,
offered for sale, sold with, or installed on a new motor vehicle prior to or concurrent with
transfer to an ultimate purchaser.


This Executive Order is valid provided that the installation instructions for the supercharger 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 device, as exempted by the Air
Resources Board, that adversely affect 'the performance of a vehicle's pollution control system
shall invalidate this Executive Order.

Marketing of this device using any 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 Air Resources Board.

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

This exemption is issued based on the carryover of submitted emissions test data from an
independent laboratory on a 2005 model year Honda Motor Company Acura TL vehicle (Test
Group 5HNXV03.24B4) certified to the Low Emission Vehicle II Ultra Low Emission Vehicle
(LEV I1 ULEV) and Supplemental Federal Test Procedure (SFTP) standards:

Federal Test Procedure:

                                                NMOG         -
                                                             CO        NOX
Standards (glmi)                                0.040        1.7       0.05
Device (glmi) with df's applied                 0.018        0.3       0.01

SFTP (US06 Cycle):


Standards (glmi)
Device (glmi)

SFTP (SC03 Alternative AC2 Cvcle):


Standards (glmi)
Device (glmi)

Test results showed that the CT-Engineering Supercharger Kit when installed on the vehicle
did not cause exhaust emissions to exceed the applicable emission standards during the Cold
Start CVS-75 Federal Test Procedure or SFTP cycles. This Executive Order is also based on
the On-Board Diagnostic II (OBD 11) testing conducted on the same test vehicle. The
CT-Engineering Supercharger Kit when installed on the test vehicle did not affect the vehicle's
ability to perform its OBD II monitoring.

 In addition, 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

              CT-EIVGINEERING - CT-ENGINEERING SUPERCHARGER KIT - D-637


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 CONCERNII\1G
ANTI-POLLU1-ION BENEFITS OR ANY ALLEGED BENEFITS OF THE CT-ENGINEERING
SUPERCHARGER KIT.

No claims 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.


Executed at El Monte, California, this &ay         of June 2008.




              CT-ENGINEERING - CT-ENGINEERING SUPERCHARGER KIT - D-637


                                       Exhibit A
                                       (E.O. D-637)

Model Year Model                       Disp.          Kit Part #   Pulley size
               NSX
               NSX
               S2000
               S2000
               S2000
               S2000
               S2000
               S2000
               S2000
               CL
               CL-S
               CL-S 6 spd trans.
               TL
               TL-S
               TL
               TL
               Accord
               Accord
               Accord
               Accord
               Accord*
               TSX
               TSX
               RSX
               RSX
               RSX-S
               RSX-S
               CRV
               Element
               MDX
               Pilot
               Ridgeline
               Ridgeline
               Civic Si
               Civic Si

* Excludes Test Groups 3HNXV02.4KCP and 5HNXV02.4VBP (both are certified to LEV I1 SULEV
emission standards and hence are not covered by the E.O.).



Document Created: 2008-07-07 12:56:27
Document Modified: 2008-07-07 12:56:27

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