whyS0serious

Hi there, I have a b18C (jdm itr) in my 2000 civic si and i have these codes p0172 and p0170

jdm itr with stock b16a2 intake manifold using usdm itr ecu

I got the jdm itr injectors clean and tested at RC engineering and I still got these codes so I decided to change the injectors to the b16a2's and after that I get different codes of cylinder misfires on all 4 so I changed them back to the JDM itr and everything is great but sooner or later i get the same codes of p0172 p0170

after doing the swap I've changed everything that has to do with the fuel system and done all major tune up anyone have any suggestion on what I should do next