Good day! Before everyone gets into the air on the basis of the title – don’t worry, we’re not doing this for fun. We just have a documentary project in which the development of the diesel is about the last 25 years, with focus on the environment. For the filming a PT cruiser was made available to us – a 2003 diesel without DPF. Unfortunately, for our purposes the smoke cloud is not enough, we need maximum everything – so it has to be a bit oversized by the topic. it would be, if the vehicle already emits smoke in idle mode or at least produces thick black smoke clouds while gasing. We have tried to clog air filters or chip tuning, but not enough. Do you know any other means? The durability of the vehicle is only secondary. As I said, it is only about having the smoke temporarily and being overly strong. Hope you can help us. LG Robert