need help

[herman440mopar]

i got a 2008 6.7 dode ,i have a mp8 on it a banks exhaust, a bank cold air intake, and i ordered a smartys s67 middle east programmer, do i need to change the down pipe , and put the 5.7 exhast from turbo to muffler.

 

[12vriviera]

just get an exhaust for 2005 to 2007 5.9 everything else should work.

 

[herman440mopar]

do i got to changr the down pipe