SR20DET problems with fuel

[senior20boost]

hey guys i have a sr20det red top swapped in an s13 240 225lph walbro fuel pump.
1 and 3 cylinders are not firing but both have spark
cylinders were pretty much full of gas.
i think its an injector problem
would be nice to have some other ideas and how i would execute checking them out.

[senior20boost]

most of the problem solved
it runs all cylinders firing wooo
but when decelerating it pops and back fires
need help!!

[mr2gons14]

ur gonna get cracks and pops if ur running a cat delete or straight pipes its normal. If anything ur tune might be slightly off so check ur afrs and adjust

[nassin31spr]

Try recirculating your bov or getting a tune.