i am running the leo pipe and the air box is hacked. previous owner hacked it up pretty good, i am using the mod box with the exhaust and have had no problems. no popping on dec or stalling, it acually runs better than before. i just wrote power commander the other day and got an email back stating that we do not and will not have one for the duke, mine being a 2008, so if you heard different that would great,
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