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Includes parts information for USA, materials, required tools (e.g., PIWIS Tester II), VIN filter activation, and a structured work procedure with safety warnings and vehicle disassembly steps.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/sport-exhaust-system-34-l-911-installation-and-conversion-instructions/654843/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/sport-exhaust-system-34-l-911-installation-and-conversion-instructions/654843.png","ImageObject",300,407,{"name":42,"@type":43},"404brain","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-30","2026-10-25",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",5,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"How is the sport exhaust system activated and deactivated?","Question",{"text":63,"@type":64},"Activation/deactivation is performed using the new switch console with the “Twin tailpipe” button, and also by pressing the “Sport” and “Sport Plus” buttons. In these modes, the system can be switched off separately using the “Twin tailpipe” button.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What additional parts must be ordered for the switch console?",{"text":68,"@type":64},"The switch strip for switches must also be ordered. The switch console is modular and must be assembled according to the new vehicle equipment.",{"name":70,"@type":61,"acceptedAnswer":71},"Does the retrofit affect engine power or exhaust behavior?",{"text":72,"@type":64},"No. Engine power and exhaust behavior of the vehicle are not affected by the retrofit change-over valve control.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},654843,1793073239,{"code":4,"msg":82,"data":83},"success",[84,88,92,96,100,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":93,"show_sort_weight":94,"slug":95},"Exam",70,"exam",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":102,"slug":103},6,50,"technology",{"id":105,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},7,"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":55,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":101,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":139,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":144,"read_time":145},1099529839291,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","| Installation and Conversion Instructions | 911 (991)\u003Cbr>19/12 ENU | 2601 | 2 |\n| --- | --- | --- | --- |\n\nSport Exhaust System, 3.4 l (I-no. 176)  \nRevision: Thei bulletin replaces bulletin Group 2, \\#19/12, dated July 1, 2014 .  \nModel Year: As of 2012 up to 2016  \nConcern: Retrofitting  \nEngine type: MA1.04 (3.4 l)  \nInformation: The sport exhaust system is activated and deactivated using the new switch console with the additional\"Twin tailpipe\" button. The sport exhaust system is also activated by pressing the “Sport” and “Sport Plus” buttons. The sport exhaust system can be switched off separately in these modes using the \"Twin tailpipe\" button.  \nThe strip for switches must also be ordered. The switch console is modular and must be assembled in accordance with the new vehicle equipment.  \nOn the 3.4-liter engine, a retrofitted change-over valve is used for controlling the sports exhaust system. The change-over valve has either one or no fresh air supply, depending on the version. Use of the  \nU-system with fresh air supply is planned for 20.08.2012 .  \nEngine power and exhaust behaviour of the vehicle are not affected.  \nParts Info: 991.044.200.03 􀂟 Sport exhaust system, 3.4 l (USA), set  \n\n| 2015© Porsche Cars North America, Inc. | Tequipment | Oct 29, 2015\u003Cbr>Page 1 of 27 |\n| --- | --- | --- |\n\n2 911 (991)  \nInstallation and Conversion Instructions  \n2601 ENU 19/12  \n Information  \nActivate the VIN filter in the PET in order to quickly identify the combined switch (switch console).  \nAlso order the following in accordance with vehicle equipment:  \n991.613.955.03 DML  \n991.613.957.03 DML  \n991.613.959.03 DML  \n991.613.967.03 DML  \n991.613.963.07 DML  \nCombined switch (switch console), I-no. 652, Coupé  \nCombined switch (switch console), I-no. 653, Coupé  \nCombined switch (switch console), I-no. 651, Coupé  \nCombined switch (switch console), I-no. 552, Cabriolet  \nCombined switch (switch console), Targa  \nParts List:  \nFigure 2  \n991.111.437.07 991.111.321.011  \n991.111.322.011  \n991.111.325.012  \n991.111.326.012 991.111.492.00  \n991.111.465.03  \n991.111.466.03  \n991.612.905.00  \n997.111.520.00  \n991.111.482.00 948.110.126.00  \n991.111.481.01  \n1x  \n1x  \n1x  \n1x  \n1x  \n2 x 1x 1x 1x  \n2 x  \n2 x 1x  \n2 x  \nFront muffler 􀂟 Figure 2-1-  \nMain muffler, left 􀂟 Figure 2-2-  \nMain muffler, right 􀂟 Figure 2-3-  \nMain muffler, left (not shown)  \nMain muffler, right (not shown)  \nVacuum line, 190 mm (steel flexi-pipe) 􀂟 Figure 2-4-  \nTailpipe cover, left 􀂟 Figure 2-5aTailpipe cover, right 􀂟 Figure 2-5bElectric wire harness 􀂟 Figure 2-6-  \nClamping sleeve 􀂟 Figure 2-7-  \nSeal 􀂟 Figure 2-8-  \nConnecting piece 􀂟 Figure 2-9-  \nClamp 􀂟 Figure 2-10-  \n\n| Oct 29, 2015\u003Cbr>Page 2 of 27 | Tequipment | 2015© Porsche Cars North America, Inc. |\n| --- | --- | --- |\n\n\n| Installation and Conversion Instructions | 911 (991)\u003Cbr>19/12 ENU | 2601 | 2 |\n| --- | --- | --- | --- |\n\n900.910.003.03 7PP.906.283.F  \n7PP.906.270 06E.133.794 900.918.005.40 991.111.491.00  \n991.111.488.00  \n999.651.401.01  \n999.239.037.40  \n999.239.045.40 N 104.355.01 N 020.904.4 999.141.047.01  \n6 x 1x 1x  \n2 x 1x 1x 1x 1x 1x 1x  \n8 x  \n15 x 4x  \nHexagon nut, M8 (three-hole flange, not shown) Change-over valve with fresh air supply 􀂟 Figure 2-11-Change-over valve without fresh air supply (not shown) Distributing piece, 3-way (T-piece) 􀂟 Figure 2-12-Tekalan line, 5.0 x 1 .0 x 1,000 mm 􀂟 Figure 2-13-Vacuum line, 80 mm (steel flexi-pipe) 􀂟 Figure 2-14-Holder 􀂟 Figure 2-15-  \nFixing clip on engine carrier (not shown) Hose, 50 mm 􀂟 Figure 2-16-  \nHose, 60 mm 􀂟 Figure 2-17-  \nCollar nuts, M8 (strut) 􀂟 Figure 2-18-  \nTie-wrap (not shown)  \nTorx screw, M10 x 28 (for securing seat, not shown)  \n1 ONLY contained in set 991 .044.200.03.  \n2 Not for USA.  \nMaterials: [000.043.204.82](000.043.204.82) 1 x Adhesive compound  \n[000.043.004.82](000.043.004.82) 1x Optimol-HT mounting paste  \n——— Rust solvent, commercially available, e.g. WD40  \nNotes: Identifying features when installed:  \nIn a","cbCaimUB0bJSPxYJ","https://ap.wps.com/l/cbCaimUB0bJSPxYJ","pdf",3736333,27,"English","# Information\n## Retrofit overview and control concept\n## Parts info and materials\n## Tools and VIN filtering\n# Work Procedure\n## Preparatory work\n## Safety warnings\n## Disassembly steps","[{\"question\":\"How is the sport exhaust system activated and deactivated?\",\"answer\":\"Activation/deactivation is performed using the new switch console with the “Twin tailpipe” button, and also by pressing the “Sport” and “Sport Plus” buttons. In these modes, the system can be switched off separately using the “Twin tailpipe” button.\"},{\"question\":\"What additional parts must be ordered for the switch console?\",\"answer\":\"The switch strip for switches must also be ordered. The switch console is modular and must be assembled according to the new vehicle equipment.\"},{\"question\":\"Does the retrofit affect engine power or exhaust behavior?\",\"answer\":\"No. Engine power and exhaust behavior of the vehicle are not affected by the retrofit change-over valve control.\"}]","Sport Exhaust System, 3.4 l - 911 - Installation and Conversion Instructions | PDF",1792955980,68]