u/The_Other_Shazbot

'23 S60

I've got my subs bumping and sounding great by tapping into the trunk subwoofer wires with an LOC.

However, I am for sure getting exhaust sounds when the windows are rolled up and the engine is running.

I think I'm also getting noise cancelling sounds very intermittently since sometimes I hear reverse "wuup wuup" sounds.

Is there an LOC that can cancel these? Or better yet, can Volvo disable

Any "secrets" or useful functions I should know about?

Shellback V2 in blue.