warp0007

i have a 1987 t2 that had been sitting for a while. Got it running and it was kind of slow. For note there was also no exhaust, just the down pipe cat. I cut the intake box open for a little bit more air, put on a greddy bov and got under neath and played with the waste gate adjustment a little. She was running GREEAT. Faster then i had ever seen but she was back firing like hell. So i took the old exhaust that i had still laying outside(in the rain and stuff for a long time) and put it on, just one pipe and the second catt(the big one) I ran it and she drove even faster, smoother and quieter. TBut like 20 miles after all this she started gettingvery bad hesitation and died on me.tar back up but wouldnt rev at all. I towed it home and it started again then died. I looked at the engine and seen that hard plastic hose on the bottom of the Bacv had cracked and the hose from the subzero injection system had came off. I replaced teh bacv hoise and put the other one back on, b ut still cant get the car start it was running fine before. Did the atf trick, did the fuse check, all fuses good, got compression, got spark, no vacume leaks, i cnat figure the damn thing out. COuld i have freid my ecu or egi?0