Installed Pioneer head unit now sounds worse?
 

I have a 2010 fit sport i recently installed a Pioneer FH-X700BT head unit. FH-X700BT - <b>NEW!</b> - 2-DIN CD Receiver with Bluetooth® MIXTRAX™, USB Control for iPod®/iPhone®, and Pandora® Ready | Pioneer Electronics USA I had problems with the installation right away first they said i wouldnt need they wiring harness kit then they said i might but supposedly they were able to work it out with my factory harness. anyway the new HU sounds pretty crappy bass is alright but seems to be missing highs i have played with every setting and still sounds bad. Im wondering they didnt wire up the tweeters or something? Any advice on how to make it sound better would be appreciated thanks.