SR idles but dies when on the road

[T0fuman]

So ive been having all kinds of problems with the swap i bought. Its 4 years old and the previous owner did nothing but beat on it I guess. It ran fine when the swap was done by a shop and the shop sold it to the guy I bought it from. When i picked it up it took forever to start and had a boost leak. Ive since fixed alot of problems but now have a idle issue. My fuel pressure was not right so I put in a aftermarket FPR with a guage so I could moitor it better. Now when the car comes to a stop at a light or something it just dies. Or when you rev the enine past 2k it just dies. Holds fuel pressure fine and my pump continues to prime so I dont think its fuel. Also just put in new spark plugs and cleaned the IVAC. Was idling around 2k before I did the FPR and plugs so I thought i did some good cause not its a pretty constant 900-1100 idle. When you hammer on the gas the thing takes off like a rocket and spools fine, it will continue to drive as long as you dont let it go back to idling range.