I looked in the forced induction FAQ and it didn't really didn't help me understand how there installed can anyone give me a step by step instructions and maybe pictures of oil catch can installation on a B16a. Also around 15-18 psi how important are they ? And i herd the head needs to be removed to install one is this true or can i install one when the motor is in the car and with the head on ?

 

Information on Catch Cans and how to construct them: (thanks 95gsrcivic)
https://honda-tech.com/zerothread?id=766009
https://honda-tech.com/zerothread?id=722482
https://honda-tech.com/zerothread?id=687222
https://honda-tech.com/zerothread?id=684673

...and the official crankcase evacuation thread:
https://honda-tech.com/zerothread?id=1199935 (thanks dasher)

start here and see where you get.

 

1 see coneheads post
2 yes they are important
3 no you dont need to remove the head

good luck