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This BMW E91 318d came to us because he had some problems with his DPF. Most of his trips were very short, that is why the filter was clogged. Placing a new filter isn't an option in these cases as the filter will be clogged again after the same amount of miles. This would be an extreme cost if the filter needed to be replaced every time. That is why we deleted the filter an removed it from the software. The EGR was closed in the software so that the engine could breath only fresh air. The software was updated to a KCPerformance stage 1 chiptune to make the engine reliable, healthier and faster. The BMW turned into an economical, fast and reliable station wagon which the client could drive long AND short trips with.