Not sure if this is very relevant to us or not, but Perrin got back to me with their sound tests with their LOUDEST exhaust that they make for the 86 platform, and this is the data:
https://monosnap.com/file/17CbGSrD9n...5o5gQ9Tda7EO03
Here is the email itself:
https://imgur.com/a/IWIMOfJ
Something tells me Cain did not follow the proper procedure for conducting a sound test...