What sound deadening material have you used?
I always thought our ZHPs were pretty darn quiet. I can hold a conversation at normal volume on the freeway pretty easily.
That said, does putting this stuff just in our door cards and under the rear seat shelf really make a noticeable difference?
Sent from my iPhone using Tapatalk Pro
2005 BMW 330i ZHP 6MT. Built 11-19-04. Bought 4-2012.
Stock: Nav, leather, PDC, Xenon
Added by me: OEM Alarm, OEM heated seats, OEM aux kit, OEM Bluetooth, intravee, M3 strut brace, BMW Performance Intake, Nappa leather arm rest, updated LCM (triple blink, euro hazards, trifecta lighting, 3 stage brakes), temp gauge