I have a 04 g35x and I have the bose system and I put a pioneer avic z1 in. The sound lyrics are not that loud even when i crank it up. My friend has a ford f150 and the stock sound system sounds alot louder than mine. I tried tuning it and everything, but i think thats all it has. Everytime i put more volume up when its already loud kind of its not really getting the lyrics louder. I didnt really want aftermarket amps and so on. I just want loud nice lyrics inside. Bose was suppose to be good.

 

No highs, no lows.....must be Bose.

The Bose amp sucks. It aggressively equalizes the signals sent from a head unit before it sends it to the speakers.