I think the popping is due to air leakage in the rear doors. I have the same problem. Ford put that damn big hole in the bottom of the doors....I guess it's dynamat time.
98.5 Tour SE Sport 2.5 ATX Mobile 1 / Purolator Bosch Wiper Blade/Arms 60W low /100 W high beam Clarion DB315 HU Blaupunkt ODx663 Front and Rear(in progress) Sony 4045 Amp "New" cupholders
