Hey guys i was looking into a turbo and was wondering how important it would be to have a 3in down pipe along with 3in exhaust i currently have tanabe exhaust which is a 2.5in pretty sure its a dual exhaust and i would really like to stay that way unless its really pointless. if i were to turbo would i need to go to a full 3in or can i stay 2.5in i wasnt really planing on going anymore then 12psi at least for a while.
Im sry if there was something close to this as a post already i looked for a little while and couldnt really find the answer i was looking for.
Any help would be great!
Thanks Craig

 

Yes