i was wondering which catback would be better 2.5or3 ,i wont have a turbo till next year and im afraid if i get 3 inch i will lose back pressure till i put the turbo on anyway the turbo kit im gettin got a 2.5 downpipe

 

id go with the 2.5...a year is a long time...you might have a different plan for ur car by then...and if u stick with it...upgrading to a 3in would not be too difficult.