Car running very rich for no reason!

Black smoke blows out under WOT and normal drive. As of recent I have thrown codes for

Bank 1 sensor 1
Bank 2 sensor 1
Cyl 1 miss fire
O2 sensors stuck on rich

To fix this I have replaced all 4 of my O2's, Replaced all 8 spark plugs, all 8 coil packs, re-programmed with my hand held tuner to 0.00% richness, Installed a new MAF sensor and even dialed down my Kennebell Boost-A-Pump. Car ran great for a day and then the dreaded O2 codes came back. The car started popping/ detonating/ sputtering and black smoke came out the exhaust again. I do have a wet nitrous set up and have checked to see if fuel is leaking into the intake and it wasnt. I have spent over 100 dollars for a 1 day fix. What the hell is making the car run rich and foul out my O2's and spark plugs?
Is my next option to take it to a dyno shop and have them play with the computer? Ive ran my current tune for 5 years and it hasnt failed me before. Any ideas?

Exactly what I was thinking! I noticed white smoke under my hood when I parked and when I popped the hood I saw 2 injectors with fuel slightly running down the side of them. But that hasn't happen again.Took the car to my mechanic and pointed out the injector issue and of course like always it never happens in front of a mechanic. Either way, they are no longer leaking. He used his hand held and check over everything and said the fuel pressure was right where it needed to be. Just pulled my plugs again an not sure which cyl it is but if you are looking at the motor from the front, he 1st spark plug on the left side was covered in oil. All the rest were bone dry and badly burnt. Im at a loss.

I am almost certain that the problem is in the injectors. I have cleaned he 4 O2's, changed my plugs again and when I do that the car runs great. Then about 20 miles down the road the car starts to pop, stutter and detonate. When I pull passenger side spark plug 1 it is soaked in fuel. I really dont see any other reason why it would be acting like this. Sadly, I am financially tapped at this point and have to wait till I get paid before I can invest more money into it. FML

jpplaw said:

Injector(s) leaking or stuck open? Can you datalog fuel pressure (drop) and fuel pump duty cycle (fpdc) ?

Click to expand...

The FBDC is at .023 and the FRP is at 39

Blown Head Gasket....