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I think people remove the foam filter to increase the sound of the turbo. I would suggest leaving the air filter alone. The stock system works better than aftermarket cold air intake systems on the market.Report it
I recently purchased a 3500 DRW with the 6 speed auto, someone suggested I remove a foam filter from the air filter system (just on the back side of air filter apparently) I am wondering if anyone else has heard this?Report it
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