how to install a adjustable fuel pressure regulator on a 91 integra with a 93 engine?

 

Is there any reason behind doing this?

Theres no need for them on a stock motor. Only needed for high hp applications.

 

if you got a full replacement it just bolts on to the fuel rail the same way as the old one and then adjust it by screwing and unscrewing the vaccume line that comes out of the top. atleast thats how my aem works