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Has anyone else been hearing a grinding/scraping metal noise coming from their gruppe M? The noise also kind of sounds like that scraping noise when you get something stuck between your brake pads and rotors. The weird thing is that it only makes the noise when I am trying to keep a constant speed. If I'm accelerating or my foot is off the gas it doesn't make the noise. I didn't think that there was any way that my intake had anything to do with the noise but I put my stock intake back in today just to see and the noise went away!!! What could this be? :banghead: :banghead:
 

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I am speculating that the noise you are hearing is the typical hiss noise common with ALL intakes on our cars. It is normal, you have to put up with it, or not do intake, no way around it. The only thing I can say is that the noise is greatly reduced with the Dinan and probably the Benfer because the filter is farther away from the cabin so it doesn't intrude as much.
 
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