[m2351jacob]

Looking to go catless and wanted some opinions. Which dp would you all recommend? And what tune do i need to buy to not get the check engine?
I’ve also read where charge and boost pipes should be upgraded. If anyone has done this before and could give me some recommendations that would be great.

[zoro2001]

Google is your friend :-)

First thing to do, no matter what, is to change out your plastic charge pipe with an aftermarket metal one. Do all preventive maintenance (coolant change, brake fluid flush, tranny fluid/filter, rear diff fluid) before mods.

I'm sure there will be others that can help with your questions, but you can start with these.

[m235i guy]

Do you have the F22 or F23. If you go catless on the F23 you better find someone who know how to put it in, because I can't find any information on this for my F23.

[F22Cam]

Originally Posted by m235i guy

Do you have the F22 or F23. If you go catless on the F23 you better find someone who know how to put it in, because I can't find any information on this for my F23.

It should be the same as on a f22

[vBlitz]

vrsf downpipe and bm3 tune. focus more on internals first before majorily modding it first in my opinion.