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Old 03-08-2013, 07:44 PM   #8
The Radium King
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Join Date: Apr 2010
Location: Canada
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100%. especially since the first UPDs were developed to slow the PS pump to reduce overheating at the track, not necessarily to to increase power. they may have got to 4" and said "hey, no more PS overheating" and stopped there.

however, you may want to figure out what the alternator needs to work; i have heard that some big subs can start to draw down the battery with big bass and a UDP.
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