Markpt113

New to this website but have viewed topics on here in the past and was hoping someone may be able to help me with an issue I am having. I recently installed LCE Street Headers on my 1992 Toyota 22re and removed the Air Injection and used block plates on the headers. I plugged one of the vacuum holes that was toward the firewall where the air injection had plugged into. I dont know if that was the only hole I was supposed to plug after removing the Air Injection. Now the truck is idling rough causing the engine to shake quite a bit and fuel is being burned in the catalytic converter where a lot of "popping" noise takes place. I also installed a new fuel rail, fuel pressure regulator and rebuilt fuel injectors. I am thinking this may be a fuel injector issue but want to make sure my vacuum lines are proper after removing the air injection.