Very Strange Problems after Build up

[Broke4G63]

Current Modifications:

-Injen Intake
-Greddy EVO Exhaust (CAT BACK)
-Apexi AVCR
-Greddy BOV Type S
-RC Engineering 650cc Injectors
-Bored .20 over
-Reconditioned Head

OBDII pocket logger is giving me these codes:

P0136 - O2 Sensor circuit malfunction
P0141 - O2 Heater circuit malfunction
P0303 - Misfire cyl 3


Right now it idles very badly. When under high boost the car will cut out. . .probably because of the misfire. Oil temp gets 3/4 of the way to hot just running normal. Seems to be burning oil as well. The A/F ratio gauge seems to hang out around lean and middle of stoich. Around 2k miles on the rebuild and has been doing this ever since it has been rebuilt.

The rear O2 sensor is broken but seems like it shouldn't be causing all these other problems.

Our theory:
A sensor (MAS or even O2) is giving a bad reading to the ECU which makes the ECU make the car run lean and misfire causing high oil temperature and burning of oil. Yeah? No?

Anyone think that it may be a MAS giving a bad reading that could cause these chain of problems? Or is it just that one bad O2. . .the hot oil and burning oil is a major concern of mine. . .being newly rebuilt and all.

Any info that may help me will be greatly appreciated.

Thanks

 

[Grimis]

P0136 and the P0141 is the Rear O2 sensor, and it should't cause what you are saying. Dont know much about misfires, but that sounds like the problem.. We need some DSM GooRus here...