Hello
Recently I've noticed that my TDI has been getting worse fuel mileage and a puff of black smoke on startup. The car is dpf deleted but I've replaced the dpf with a cat from a BLS caddy and gotten it tuned correctly. The deviation on the injectors are very close and the maf readings are also ok. Can the puff of smoke be because of high EGTs since the puff is a lot stronger when warm? The car has driven 155k km.
Recently I've noticed that my TDI has been getting worse fuel mileage and a puff of black smoke on startup. The car is dpf deleted but I've replaced the dpf with a cat from a BLS caddy and gotten it tuned correctly. The deviation on the injectors are very close and the maf readings are also ok. Can the puff of smoke be because of high EGTs since the puff is a lot stronger when warm? The car has driven 155k km.