3SI manifold questions

[///Makis]

Originally Posted by oldman_stew

Hey everyone,

I'm new to 1 series and was hoping someone could point out the visual difference between a regular manifold on US cars and the 3 stage manifold.

Just want to make sure I get the right one 🤠

Tia

Hey bud,

See the below.

The three stage has two openings for the valves

[oldman_stew]

Originally Posted by ///Makis

Hey bud,

See the below.

The three stage has two openings for the valves

Much appreciated, thank you!