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I had that same harness in my 2006 EB, it didn't stop the sub pop, even adding an AFDI-5V before or after the crus converter, and trying a second AFDI-5V, I still had pop. I switched to a metra harness (with and AFDI-5V) and Axxess SWC and the pop went away. Both the Crux and Axxess SWC sometimes makes my volume go up instead of down if I push the volume down button.
I bought a touchscreen CarPlay stereo for my '04 from Crutchfield and I had nothing but nagging issues with it for over a year.
After the head unit was installed with their wiring harness, certain FM stations would produce static if I used the turn signals or stepped on the brake. My turn signals would speed up or slow down at random. I never heard any of the popping that's being talked about, but after a year the antenna adapter started having issues.
I finally got fed up, ripped the whole damn thing out and sold it lock, stock & barrel on Facebook. I put the original factory stereo back in (has the 6-disc CD changer). I still have a little issue with static and the turn signals, but it isn't as bad. I'm starting to think those gremlins are related to the LED flasher and LED turn signals & brake lights.
My LED turn signals speed up once in a while too.
Don't get me started on the issues I had getting my LED headlights to function properly.