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Old 02-23-2020, 12:11 AM   #10
EndlessAzure
Wheels for Brains
 
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Join Date: May 2017
Drives: '14 FR-S [37J] | Daily/Track
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Garage
Got a sound level meter. Full catless cold start registered at ~97 dBA. Fast revs to 6K RPM registered ~106 dBA peak, easy revs to 6K and held steady registered ~100 dBA peak. Rough measurement at 2 ft away, 45 degrees up from the level plane of the exhaust tip. This isn't too surprising considering the JASMA rating was ~93 dB for catback only


After living with the catless system for a few months: it certainly has some drone around ~3k RPM, but is not unbearable. Quite quiet outside that range and when easy on the throttle.


Some in-cabin clips of spirited driving:

[ame]https://www.youtube.com/watch?v=DFWiRAq1n9M[/ame]

Last edited by EndlessAzure; 07-06-2021 at 05:13 AM.
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