I finally broke the 150db barrier yesterday at Sound Off at the Fairgrounds show. I did 151db seal on the glass from the trunk!!! I took 1st place with absolutely no testing. Shit, I almost missed regestration by 15mins rushing to install subs and miscellaneous equipment and just making sure everything turns on lol! I believe there's plenty more db's in this set-up only running stock alt now, but got a h.o. on the way.