firewall insulation

[j930]

My 84 930 has lost all of the sound baffle on the engine side of the fire wall. My question is dies it make that much of a difference? If the consensus is yes then what type of material should I put back on there? When I replaced the stereo and speakers I found a material at the stereo place called"Road Kill" that is a sound deadening material. It has thin metal lining on one side and some really thick sticky adhesive side. looking for thoughts

[aerodyn930]

Most of those metal faced insulating materials will be more effective than the factory foam pad, Don't expect a big reduction as most of the noise is transmited thru the shifter tunnel area,
I would make sure that any of the missing foam has not been ingested by the cooling fan , It may cause cooling issues depending on where it accumulates.

Lou / AERO DYNAMICS

[IMR-Merlin]

another option.

The Official Dynamat Website

[j930]

thanks for the input I removed all of it when I first got the car chunk by chunk as it was just piecing off then last week when I removed the intercooler and the air filter assembly I could really get in there and found a few more pieces. If the sound difference wont be noticeable I don't see any purpose of reapplying.