Congrats on the RR550! So far zero issues with them and the car pulls hard. If you can afford it i would highly suggest putting new downpipes on when you do this turbo install. You will have to take the old ones out and at that point it's a no brainer.

Also if you wait until black friday to order downpipes, I know a few vendors that will do deals on AR DPs PM me. Yes i know it's a month away you can save a few $$$.