[Bigdrumma22]

Originally Posted by Allnuts

Hope this helps (OBD-II Trouble Codes - OBD-II DTC Trouble Codes Repair Help Site)
P0133, P0153 -Oxygen Sensor Circuit Slow Response caused by
* The oxygen sensor is faulty
* The wiring to the sensor is broken / frayed
* There is an exhaust leak

P1151- Lack of HO2S-21 Switch, Sensor Indicates Lean cause by

Electrical:

* Short to VPWR in the harness or HO2S
* Water in the harness connector
* Open/shorted HO2S circuit
* Corrosion or poor mating terminals and wiring
* Damaged HO2S
* Damaged PCM

Fuel System:

* Excessive fuel pressure
Leaking/contaminated fuel injectors
Leaking fuel pressure regulator
Low fuel pressure or running out of fuel
Vapor recovery system

Induction System:

* Air leaks after the MAF
* Vacuum Leaks

PCV system:

* Improperly seated engine oil dipstick

EGR System:

* Leaking gasket
* Stuck EGR valve
* Leaking diaphragm or EVR

Base Engine:

* Oil overfill
* Cam Timing
* Cylinder compression
* Exhaust leaks before or near the HO2S(s)

Helps a lil' with some other things to look at. The front o2's are brand new and the rears are fairly new, or so I'm told. I know all those things are "typical" to look for on a stock car, but being that I've done all the usual mods to cause this situation, I think it would be extreme coincidence for one of those things to be the problem. EGR or small vacuum leak possible, but didn't have the problem until the L/T's went on... just food for thought...

Originally Posted by 96greengt

Larger injectors will do you no good as the PCM will still think they are stock unless told so by custom tuning. Tuning around it will be your best bet and get maximum power along with fuel economy, best not to stay in it (unless you know what ping sounds like) then get out of it. Running lean at WOT = bad. Better to run fat then lean at WOT.

The pcm can only compensate for so much.

Yes, that's what I meant by "normal driving conditions". I know WOT either way can be bad and I haven't. It's been driving like normal, just didn't know if there are any long term damages that can occur. Ok, I didn't think the ecu, or pcm, not sure which controls it of if they're one in the same would recognize the injectors either... just curious. My other vehicle has no computer, so troubleshooting all this is new to me. Thanks for the info and keep it coming.