Ok, first, here's the system:
- Digital Designs M3 amp
- Memphis Mojo 15" Quad Coil
- Custom box, 3.75u ft (before displacement), 4x 4x18" aero ports (external)
- 2004 Impala
Ok, the system was doing 147.2 no problem yesterday, we sealed the rest of the trunk (back plate, sides, rear deck)...