Screamer noise/track days

[Lewis124]

Hi I’m thinking about doing some track days later in the year. At the moment I've got an WEPR ct9 top mount with an external wastegate and  screamer. At the moment it’s fairly loud on fall chat what I personally don’t mind but won’t pass noise testing  so what’s the best way to get it quieter to pass noise testing ? 

[TrisK]

plumb the screamer back into the decat