ej22t wont run right

[cruisen_15]

ok so i did a full rebuild on my ej22t and put ej20g dohc cams on it with 2.5l intake manifold..

i started the car today but it doesnt run right at all! it backfires within the manifold and my vacum level is about 5 at 1k rpm.

i took off the #1 cylinder injector and it doesnt do anything to it running but it seems i could almost do that to any injector and it would still keep running with me giving it throttle.... my injectors were fine before the rebuild

any ideas?