Got a b20vtec with Gsr head and Did not do any research before taking on this project. So apparently the iab that controls the secondary runners is missing. Didnt come with the swap. So now I'm searching for a set. What exactly do I need? I've seen a few different types of setups. It's a obd1 p73 ecu in a 95 Integra ls

 

why not get a single runner manifold? it'll be easier for you since you dont even know what you're missing.

 

I like the idea of second set of runners. So I want to get it functional now

 

You don't even have the right ecu to control the secondaries

 

my baad put the wrong ecu code. i have the p72