Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on November 4, 1997.
As of Sunday, May 11th, 2025 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
1994- 1997 Ford pickup vehicles equipped with 7.3L Navistar International Powerstroke heavy-duty diesel engines

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-171-9
  • Executive Order 171-9 / D171-9
  • ARB # D-171-9
  • Executive Order No: D-171-9
  • C.A.R.B. No. D-171-9
  • Resolution D-171-9
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-171-9 PDF

D-171-9 Document:

CARB_D-171-9

(Page 1 of 2) State of California AIR RESOURCES BOARD EXECUTIVE ORDER D—171—9 Relating to Exemptions Under Section 27156 of the Vehicle Code ADVANCED TURBO SYSTEMS, INC. ATS WASTEGATED TURBINE HOUSING ASSEMBLY 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 instailation of the ATS Wastegated Turbine Housing Assembly manufactured by Advanced Turbo Systems, Inc. of 5919 South 350 West, P.O. Box 57547, Murray, Utah 84107, 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 Vehicle Code for the 1994—1997 Ford Motor Company pickup vehicles installed in 7.3L Navistar International Powerstroke heavy—duty diesel engine. This exemption shall not apply to any device, apparatus, or mechanism 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 this device will not recommend tuning the vehicle to specifications different from those submitted by the system 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 implied by the vehicle manufacturer.

ADVANCED TURBO SYSTEMS, INC. EXECUTIVE ORDER D—171—9 ATS WASTEGATED TURBINE HOUSING (Page 2 of 2) The ARB finds that reasonable grounds exist to believe that use of the ATS Wastegated Turbine Housing Assembly may adversely affect emissions of motor vehicles when operating under conditions outside the parameters of the previously prescribed test procedures. Accordingly, the 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 tests results demonstrate that the ATS Wastegated Turbine Housing Assembly 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 os the date the test results are validated. Further, if such test results or other evidence provides the ARB with reason to suspect that the ATS Wastegated Turbine Housing Assembly will affect the durability of the emission control system, Advanced Turbo 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. 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 ADVANCED POWER SYSTEMS, INC‘S WASTEGATED TURBINE HOUSING ASSEMBLY. 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 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 E%/\day of November, 1997. . B7 Spyfhmerfield, #hief Mobile Source Operations Division

State of California AIR RESOURCES BOARD EVALUATION OF ADVANCED TURBO SYSTEMS, INC.‘S WASTEGATED TURBINE HOUSING ASSEMBLY FOR 1994—1997 FORD MOTOR COMPANY PICKUP TRUCKS POWERED BY A 7.3L NAVISTAR POWERSTROKE HEAVY—DUTY DIESEL ENGINE FOR EXEMPTION FROM THE PROHIBITIONS OF VEKICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE CALIFORNIA CODE OF REGULATIONS November, 1997

State of California AIR RESOURCES BOARD EVALUATION OF ADVANCED TURBO SYSTEMS, INC.‘S WASTEGATED TURBINE HOUSING ASSEMBLY FOR 1994—1997 FORD MOTOR COMPANY PICKUP TRUCKS POWERED BY A 7.3L NAVISTAR POWERSTROKE HEAVY—DUTY DIESEL ENGINE FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE CALIFORNIA CODE OF REGULATIONS by Mobile Source Operations Division 9528 Telstar Avenue El Monte, CA 91734—8001 {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 Advanced Turbo Systems, Inc. (ATS) of 5919 S. 350 W., Murray, Utah 84107, has applied for exemption from the prohibitions in Section 27156 of the California Vehicle Code for their Wastegated Turbine Housing Assembly. The ATS Wastegated Turbine Housing Assembly is designed for installation in 1994— 1997 Ford pickup trucks powered by a 7.3L Navistar Powerstroke heavy—duty diesel engine. ATS has submitted a complete application with all the required information. Based on an engineering evaluation of the functional test data submitted from steady—state heavy—duty chassis dynamometer testing, the staff concludes that ATS, Inc.‘s Wastegated Turbine Housing Assembly will not adversely affect exhaust emissions from vehicles for which an exemption is requested. The staff recommends that Advanced Turbo Systems, Inc. be granted an exemption from the prohibitions in Vehicle Code Section 27156 and that Executive Order D—171—9 be issued.

TABLE OF CONTENTS Page Number SUMMARY CONTENTS i1 I. INTRODUCT ION II. CONCLUSION III. RECOMMENDATION IV. DEVICE DESCRIPTION v. DISCUSS ION APPENDIX INSTALLATION INSTRUCTIONS 1i

EVALUATION OF ADVANCED TURBO SYSTEMS INC.‘S WASTEGATED TURBINE HOUSING ASSEMBLY FOR 1994—1997 FORD MOTOR COMPANY PICKUP TRUCKS POWERED BY A NAVISTAR 7.3L POWERSTROKE HEAVY—DUTY DIESEL ENGINE FOR EXEMPTION FROM THE PROHIBITIONS OF VEKICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE CALIFORNIA CODE OF REGULATIONS I. INTRODUCTION Advanced Turbo Systems, Inc. (ATS) of 5919 S. 350 W., Murray, Utah 84107, has applied for an exemption from the prohibitions of Vehicle Code Section (VC) 27156 for their Wastegated Turbine Housing Assembly. The Wastegated Turbine Housing Assembly is designed for installation on 1994—1997 Ford Motor Company pickup trucks powered by a 7.3L Navistar Powerstroke heavy— duty diesel engine. ATS has submitted functional test data obtained from steady—state heavy—duty chassis dynamometer testing conducted on a 1996 model— year California certified 7.3L Navistar heavy—duty diesel engine. II. CONCLUSIONS Staff conducted an engineering evaluation and based on the test data submitted by ATS, the staff concludes that the ATS Wastegated Turbine Housing Assembly will not have any adverse effects on the exhaust emissions from the engine for which the exemption is requested. III. RECOMMENDATION The staff recommends that Advanced Turbo Systems, Inc. be granted an exemption from the prohibitions in California Vehicle Code Section 27156 for the 1994—1997 model—year Ford Motor Company pickup trucks powered by a 7.3L Navistar Powerstroke heavy—duty diesel engine and that Executive Order D—171—9 be issued.

IV. DEVICE DESCRIPTION The ATS Wastegated Turbine Housing Assembly is designed for installation on 1994—1997 Ford Motor Company pickup trucks powered by a 7.3L Navistar Powerstroke heavy—duty diesel engine. The subject housing assembly is a direct replacement for the stock unit except that it incorporates a smaller turbine nozzle and a wastegate control unit to limit maximum boost. ATS uses an Allied Signal Turbocharger, model number TP38. The dimensions of the replacement turbocharger turbine housing has been changed from those of the OEM turbocharger. The turbine nozzle area (A) and the distance from the center of the turbine wheel to the centroid of area (R) of the replacement turbocharger have been reduced, decreasing the A/R ratio from 1.15 to 1.00. The smaller turbine nozzle allows a faster boost rise which increases the turbine inlet gas velocity at lower engine speeds. By providing a faster boost rise during transient accelerations, more air (boost) is available for the combustion process thereby assuring more complete burning of the fuel. Ultimate boost level is then controlled by the wastegate which protects the engine from being exposed to excessive cylinder pressures. Additionally, the smaller nozzle housing allows the turbocharger housing to accelerate faster thereby providing improved engine response and reduced snap—idle smoke. The manufacturer claims adding the wastegate would improve driveability and emission performance. Engine horsepower remains the same since there is no change in maximum fuel delivery. Utilizing the ATS Wastegated Turbine Housing Assembly would improve low—end acceleration characteristics while retaining the original maximum power rating. The manufacturer states there are no modifications or alterations to the OEM‘s engine management control system or power rating.

V. DISCUSSION Advanced Turbo Systems, Inc. has requested an exemption for the 1994—1997 Ford Motor Company pickup trucks powered by a 7.3L Navistar Powerstroke heavy—duty diesel engine. The ATS Turbine Housing Assembly is the same as the OEM except for a smaller turbine nozzle which allows for a faster boos£ at lower engine speeds and a wastegate that lTimits maximum boost during accelerations. These changes are intended to improve the response of the turbocharger and reduce the time between the opening of the throttle and the turbocharger reaching operating speed. The reduction of the turbo lag time could decrease hydrocarbons and particulate emissions by reducing the duration of the oxygen shortage. The difference in the turbo lag time between the OEM turbo and ATS‘s turbo with wastegate is not sufficient to increase the combustion temperature. Also, faster response of the turbocharger, for short durations, during low end acceleration would not impact NOx emissions since there will be no sufficient increase in the combustion temperature. The ATS Turbine Housing Assembly for the older 7.3L Navistar heavy—duty diesel engines are similar to those present on newer model—year California—certified 7.3L Navistar heavy—duty diesel engines equipped with a turbocharger and wastegate. ATS submitted torque and horsepower curves for vehicles equipped with the ATS turbo system and the stock configuration. The testing was performed on a heavy—duty truck dyno with a 1996 California—certified 7.3L Navistar heavy—duty diesel engine. This data supports the manufacturer‘s claim that the purpose of the ATS Turbine Housing Assembly is to improve low— end engine performance while retaining the original power rating. In addition, by providing a faster turbo response during low—end acceleration there should be no impact on exhaust emissions.

The 1997 model—year 7.3L Navistar heavy—duty diesel engine is a carry—over from previous model—years. Therefore, the ATS Turbine Housing Assembly will have no adverse emissions effect on the engines for which exemption is requested.

APPENDIX

January .7, 1997 POWERSTROKE WASTEGATED TURBO HOUSING INSTRUCTION READ THROUGH INSTRUCTIONS BEFORE INSTALLING 1. Remove engine shroud. Remove the three acorn nuts that hold the engins shroud on. Remove the turbe air inlet hose, with a flas bladed screwdriver. Remove the stock pressure chamber "¥" Using a flat bladed screwdriver. Loosen the four rose clamps on the Rump hoses, Next loosen the V band clamp which holds the pressure chamber to the turbo. Remove pressure chamber along with the hump hoses from the engine. CAUIION: _DQ_NOT LOSZ TER Q‘RING wHICH SEALS THZ URRO TCO THE PEESSIRE CRIMRER Remove ATS Pressure Chamber "Y" (Only if equipped with ATS Intercooler System) Using a flat bladed screwdriver loosen the two clamps on passenger side pips and remove pipe. Next loosen the four clamps on hump hoses and remove ATS pressure chamber "Y" and hump hoses, then loosen the V clamp ard clamp on drivers side pipa and removs. CAUTION:DCNOTLOSFETHE ‘RING WHIC SAL [ 2 2 DE TDR Remove Turbo, Remove the marmon (V band clamp) that holds the final exhaust, using a 7/1§$" deep socket with extension and rarchet. Unkook the rod that controls the butterfly in discharge housing, slide collar over and rod will pop off, then remove the three tweive point 5/i6 bolts holdirg the discharge housing to the turbo, using a 5/16 twelve point combinaticn wrench or twelve point socket with extension and ratchet. Remove the two lOmm bolts using a l3mm flex socket with extension and rakchet,. Remove the two 10mm nuts using a l§mm combination wrench, which holds tha turke housing to the turbo inles feed flenge, then remove the four $mm bolits holding the turbo to the engine, using a lOmm flax socket with extension and ratchet, then remove turbo from engine. NOT_DRAMAGE STURN _G! c

5. Remove Turbline Eousing. Remove the four 5/16" twelve point bolits that hold the turbine housing to the turbo. Using a 5/16" twelve poins compimnation wrench, then remove housing ard clean all surfaces. Ingtall New Wastegated Turbine housing. Install the new wastegated turbine housing on turso, using Anfi—seize on the four 5/16" twelve point bolts and tighcen. Install Turbo Set turbo on engine. Re—install ths four smm bolts and tighten using LlOftm flex sockes with excension and rarchet. Using Anti—seize on bolts and nuzs. Tighten the two l0mm bolts with a 13mm flex socket, extension and ratchet, then tighzen the two 10mm nuts with a i§mm combiration wrenck. Install discharge housing, coating the three §5/16" twelve point bolts with Anti—seige and tighten, Hook up butterfly rod and re—instail marmon V band clamp, tighter with 7/16" deep socket and ratchet. Install stodk pressure chamber "Y" Grease o—ring and install in grove on turbe port. Set pressure chamber in place, using a flat bladed screwdriver tighten up clamps on hump Roses and V clamp on turbo pork. Install curbe air inlet hose, tighten both clamps with flat bladed screwdriver. Install Wastegate Hose with Stock Preesure Chamber "¥" Cut the stock hose connection between the intake manifold pressur sensing port and the stock MAP sensor on the firewall and install the supplied barbed "I" fitting and clomps. Attach the remaining leg of the "T" fitting to the barbed fitting on the by—pass turbine housing actuator utilizing the supplied hose and cleamps. 10.Start engine and check for leaks l1.Ingtall engime shroud (NON INTERCOOLED) set shroud in place and tighten the three acorn nuts.


Document Created: 2005-09-01 12:39:42
Document Modified: 2005-09-01 12:39:42

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