I did find to versions on weaponx cat and catless
https://weaponxmotorsports.com/products/afe-twisted-steel-down-pipe-race-series-honda-civic-type-r-17-19-i4-2-0l-t
https://weaponxmotorsports.com/products/afe-twisted-steel-down-pipe-street-series-honda-civic-type-r-17-19-i4-2-0l-t
You can possibly install an aftermarket unit. Last I looked it wasn't available for the 11th gen as the plugnplay harness wasn't released. There are install instructions and videos for the 10th gen with manual. You have to do a pedal dance to confirm the car is in neutral and to enable the...
Downpipes are the same between the FK8 and FL5 and I'd go with the RV6 one since PRL pulled theirs. Front pipes are unique and I'd go with PRL for this since RV6 hast released theirs.