How off are these numbers?

[OneLethal87GN]

With my car at operating temperature, and an idle of between 850 and 950 rpms, my Scanmaster showed these numbers:
O2: mid 300s to 000
AF: 06
LB: high 20s to low 30s
Int: 128
BL: 138
TPS: .48
IAC: 00
Are these close, because I've been having a real bad problem of cutting off while sitting at a light due to a very low, less than 010 mV, O2 reading. BTW, new O2 (4th replacement in as many months), new fuel pump, injectors installed new early last year, and an old K-B hot flash chip. My MM street chip suffers these same symptoms too.

 

[NC87GN]

IAC should not be 00. You should reset IAC and TPS. Check the IAC valve that is screwed in the throttle body also. If its carbon fouled take some brake clean to the valve side only. If your stalling out, when you let off the pedal, this could be the cause. Reset procedure is on www.gnttype.org I like to see the IAC's between 30-40. Don't throw the old 02 sensors away as they might be good if you never adressed this problem in the past.. Good Luck!

Also, if the car is pretty much stock cam, heads, intake, heavy D5 convertor set the RPM's to 788-850 at idle. Unless your chip maker set it otherwise, 90% of the chips I've seen run 750-850 at idle.

 

[OneLethal87GN]

Yeah, it's a stock engined car. Only things done were a timing chain and bolt-ons. The chip I have in there now is a Kenne-Bell Hot Flash chip so I'm not sure of the rpm setting.