Finaly got the car all back together. After changing out all the plugs (fowled, nasty) the car is running way rich again. Replaced MAP too. What else do I need to do to lean the car out? New O2? The ECM doesn't have a ALDL, do I can't reset minimum air like that. Car will die when you get on the brakes, or rev and let off.
Also searches alot when in drive.

BBT

 

you don't say what you drive.
Still, it sounds like it's almost time for a carburetor.

 

4bolt main block, 396 cubes, roller motor.Edelbrock base, ported runners/plenum. HEI sep from the ECM, DFI piggyback on the ECM.

Carb? Bah. With this motor, she'd be lucky to get 10mpg.

I'm going back to my LT1's