I was on a M5 forum and one of the common mods were to remove the charcoal filters.
well this guy took the filters out of brand new m5 and drove a construction zone and shortly there after started to experience all kinds engine problems this guy took it in to Bmw not thinking of putting the filters in and they found he ruined the engine and they would have to replace at about 20,000 for a new motor Bmw didn't foot the bill due to STUPIDITY
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