Swapped over the decatted OEM 2017 header on Thursday.
Ultimately the SP isn't going to work for me, I blame my sensitive ears
It's much more Livable than when paired with UEL headers. Drone is considerably less intense inside the cabin; but still there from 2000-3000rpm.
Going to continue to run the decatted header for a while, I want to see if I miss the UEL sound.
SP will be up for a sale soon.