rcamacho
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View attachment DecibelXReport 2.pdf
After driving the 998 recreationally for a few years I’m finally getting around to sound insulating it a tad to make it more humane on my family (even though we wear earpro).
After removing the doghouse rubber padding a single sheet of Noico black 80 mil was applied to the degreased surface. The factory pad was reinstalled over this layer. Mate rivets can be substituted with 10-24x1” bolts/locking nuts.
Initial measurements before/afterwards seem to indicate an idle sound reduction from ~94db to 91db with no other work.
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