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Description of the video : Walker Expert Technician - 02 The combustion gases
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Description of the video : Walker Expert Technician - 04 Backpressure and fuel consuption
Description of the video : Walker Expert Technician - 05 The Homologation Process & New European PN counter test
Description of the video : Walker Expert Technician - 06 The exhaust system main parts
Description of the video : Walker Expert Technician - 07 Diagnosis of exhaust system parts