Did you use a new DI on bank one or a used one? Sounds like it is a bad DI, I had this happen while I was driving a V6 once. The DI started shorting and eventually burnt out car fell flat on its face (because it was only running on 3-cylinders,) causing raw fuel to dump into the cylinders and eventually get pushed into the exhaust. Long story short the car burnt up in a matter of minutes. Definitely wouldn't drive it until you put a known good DI on it and it runs/idles good.
1997 Saab 900 SE Convertible "That Yellow Bastard"
2004 Saab 9-5 Aero SportWagon "Mr. White"
Bladwijzers