I also took a dB meter with me just out of curiosity, I measured my friends 350z with test pipes and injen exhaust, he hit 106dB from about 20' away. I measured mine the same way and at ~4k rpm I went over 130dB and I turned away and ran back. For almost an hour my left ear hurt like a bastard since that was the one that turned into it as I turned around really quickly. Lol Even the tuner was' "that is a loud exhaust, um yeah, increadibly loud". After the first pull he grabbed ear muffs off the wall.