Hey, I believe you, sometimes the boxes and subs make amazing things. I have two dbDrive CW12D in a ported box and they hit 143.7 dB, they were metered in a pro installs shop called Spectrum, here in Ags. Mexico, with an AudioControl RTA. Be careful with your subs, maybe you could knock down one or two neighborhoods.
Nice stuff don't worry i know what it is like i went to a comp a while back (My First time as a competitor) got 138.6 and pplz that were there got pissed and jelous and said i cheated and i must have a 15 in the tyre well HA HA HA to them tyhey got the judges to do a thourough search and they found one pair of type s 10's in sealed boxes and Kuc all else
hey, sometimes car audio does crazy ****, my one 10" Memphis M-Class(ported Box) , hit 138.1 at one shop and 138.7 at another.(one Damn 10", hurts people(organs vibrate))
The other day, me and my friends went to have his new 12" Memphis PR tested, it hit 112Db the first time, and the next time he was hittin 125Db.(ported Box)