I recently installed an RLS cat delete on my F3L and I gotta say I'm liking the sound. It's throatier without an increase in volume - nice. I'm detecting a stronger engine too, I didn't know that was part of the deal.
Ours is a red, black and chrome 2017 F3 Limited. Bought new in 2/2019. The avatar is my first bike back in 1952, a Simplex Servi-Cycle. Photo taken at the Barber Museum.