The JDM P30 is worth a try. Leave the B16 intake manifold
Is the GSR Intake Manifold OBD1?? (if so use those injectors) Throttle Body OBD1??
If the GSR IM is OBD1....I suggest you do what I wrote about a few posts ago (Injectors, TB, JDM ECU and 16 degrees stock timing)
Plus you should; take the IACV off and see if its dirty....it takes ten minutes
Is the GSR Intake Manifold OBD1?? (if so use those injectors) Throttle Body OBD1??
If the GSR IM is OBD1....I suggest you do what I wrote about a few posts ago (Injectors, TB, JDM ECU and 16 degrees stock timing)
Plus you should; take the IACV off and see if its dirty....it takes ten minutes