Thread: New GruppeM Intake <$675 shipped
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      01-28-2016, 07:31 PM   #5
Arsonism
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Drives: '08 M Coupe
Join Date: Oct 2013
Location: Austin, TX

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Quote:
Originally Posted by SaltyNC View Post
I figure with the GruppeM I won't need hearing aids to hear the S54 roar
I thought that's what RPI's were for?
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