look what i found at newtiburon.com. Info: "This is a quick DIY for fixing the problem with the stock sub...since the factory wired it up out of phase (backwards). This mod gives u better sound and better bass.

Total Time: 5-15 mins...but it really depends on how long it takes you to remove the wires and swap them...

Warning: Your bass will slap the crap outta your ear drums...proceed at your own risk"

here's the link http://www.newtiburon.com/forums/sho...4&page=1&pp=25

I did this and now my stock sub hits alot harder.