what parts should i upgrade?

[allgo]

im putting together a b16 with ctr pistons and cams. what should i upgrade after that? (ecu,fuel,?)

 

[posol]

i/h/c/e if you haven't already
vafc + dyno time

 

[red91hatch]

hey... what u mean by that /? / ? /..

 

[Citizen_Insane]

intake/header/cat(?)/exhust