2018 exhaust.

Is there any point in doing a turbo back exhaust?

I believe there’s a CAT on the downpipe after the turbo, DPF, SCR, and muffler.

Do most just use a race pipe between the downpipe and muffler or replace it from the end of the downpipe to the tip?

I just want 4” as economical as possible and not a crazy loud exhaust.

I’m trying to avoid spending crazy money on a full SS exhaust and avoid drone when towing.

Thanks.