Best I hit was in my SVT, before I had the four 10's in the car I had a 15" Orion XTR3 and a 12" Orion Cobalt.
I hit 139 dB with the mic located slightly to the right of the shift knob.


Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black