My 1.8t felt a bit weak for a week or so. Then, driving to work in the morning I passed another car when suddenly it felt if someone hits me in the back. From that point on my car runs great again or even better than before it felt weak. I think the engine is louder than before now. What could have happend? Could it be that the ecu adjusted to the Remus I installed 3 weeks ago or something else? Please tell me your opinion.

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