2.5" or 3"
2.5" is fine.
I ran a 2.5" system on a streetported 13BT running 14psi of boost and it didnt complain at all.I only upped to 3" because of a later turbo upgrade.For a N/A application 2.5" is plenty.
I ran a 2.5" system on a streetported 13BT running 14psi of boost and it didnt complain at all.I only upped to 3" because of a later turbo upgrade.For a N/A application 2.5" is plenty.


