Such precautions include the careful installation of the device in the engine exhaust system according to the instrument manufacturers' recommendations and to good engineering practice. Engine performance and emissions shall especially not be affected by the installation of the device.

‘deteriorated component/system’ means an engine or exhaust aftertreatment component/system that has been intentionally deteriorated in a controlled manner by the manufacturer for the purpose of conducting a type-approval test on the OBD system;

EUROPA - EU law and publications - EUR-Lex - EUR-Lex - 32008R0692 - EN - Commission Regulation (EC) No 692/2008 of 18 July 2008 implementing and amending Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information (Text with EEA relevance) - COMMISSION REGULATION - (EC) No 692/2008 // of 18 July 2008 // implementing and amending Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of ...[+++]motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information // ADMINISTRATIVE PROVISIONS FOR EC TYPE-APPROVAL // Appendix 1 // Verification of conformity of production — First statistical method // Appendix 2 // Verification of conformity of production — Second statistical method // Appendix 3 // MODEL // INFORMATION DOCUMENT No . // Appendix to information document // INFORMATION ON TEST CONDITIONS // Appendix 4 // MODEL OF EC TYPE-APPROVAL CERTIFICATE // (Maximum format: A4 (210 × 297 mm)) // Addendum to EC type-approval certificate No . // concerning the type-approval of a vehicle with regard to emissions and access to vehicle repair and maintenance information according to Regulation (EC) No 715/2007 // Appendix 5 // Vehicle OBD information // Appendix 6 // EC Type –Approval Certification Numbering System // Appendix 7 // IN-SERVICE CONFORMITY // IN-SERVICE CONFORMITY CHECK // STATISTICAL PROCEDURE FOR IN-SERVICE CONFORMITY TESTING // RESPONSIBILITIES FOR IN-SERVICE CONFORMITY // VERIFYING AVERAGE EXHAUST EMISSIONS AT AMBIENT CONDITIONS // (TYPE 1 TEST) // EMISSIONS DATA REQUIRED AT TYPE-APPROVAL FOR ROADWORTHINESS PURPOSES // MEASURING CARBON MONOXIDE EMISSION AT IDLING SPEEDS // (TYPE 2 TEST) // MEASUREMENT OF SMOKE OPACITY // VERIFYING EMISSI ...

For engines with multiple exhaust streams (such as some V6 and V8 engines), each bank of the exhaust system will be installed separately on the bench in parallel.

For engines with multiple exhaust streams (such as some V6 and V8 engines), each bank of the exhaust system will be installed separately on the bench.

The exhaust pipe length from the exit of the engine exhaust manifold or turbocharger outlet to the dilution tunnel is required to be not more than 10 m. If the system exceeds 4 m in length, then all tubing in excess of 4 m must be insulated.