I just traded in my '08 Crew Max Limited for a '13 Crew Max Platinum. The speaker set up is the same with the 12 JBL's. The only difference between the two is this one has the navigation system. Here's my issue.... The stereo is nowhere near as loud as the Limited's. Not even close. I called the dealer and asked if there is another amp that I can upgrade to and they said no. He told me this one is the same as my '08's, but it definitely is not. The sound is crystal clear like the last one, just nowhere near as loud. Any ideas?