Car's running really rich, you said it's got a chip in there? There's a slot on the back side of the ECU, should have some ford tape on it or something that says VOID, something like that, if there's a module in there it has a chip, if not then it doesn't. The huge spike makes me think that it could be something to do with the the FMU as it probably has one with a A/F looking like that. You can see first off it's really choppy like the fuel pump is having a hard time supplying the injectors, so check to see what kind of fuel system you got going there, you want a 255lph in-tank and a T-Rex 255lph external at the least, there is some nice Aeromotive ones as well but big bucks! If you got an FMU get rid of that thing and get it tuned the right way!
That car is far from rich. 11.4-12.0 is where it needs to be with an S/C on it. I'm betting money its the IMRC's.
Knowing your rep. and experience, I hate to disagree. However, my '96 wouldn't run anywhere near that rich. 11.9-12.3 to be exact. Anything lower would choke/flood the crap out of it.
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