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Old 06-16-2011, 03:53 PM   #2
Registered User
Join Date: Feb 2008
Location: Orlando
Posts: 497
My Ride: 04 Coupe
The box is the DISA valve. If its buzzing like you say its broke and needs to be replaced. It will make your CEl come on if it isnt on already. They run around $200. It's purpose is to raise the low and midrange torque "and" raise the top end power output. It's a valve that opens or closes intake ports depending on the load. Its really easy to change...theres a ton of videos on youtube that shows you step by step how to change it. Good luck!
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