With my single T I have the stock O2 and have an JS air/fuel meter(drivers column) and Apexi air/fuel meter connected.

Does the stock O2 register correctly through out the Rpm and full throttle range or only at cruise and idle.

Both read the same (rich) and if I add fuel the plugs will go out.( At any position)The ECU was reprogrammed for the turbo which sizing I sent to the reprogrammer.

Since this is a new but stock sensor I want to make sure that my tunning is accurate.

Thanks for any info on the O2

you should not be tuning off the stock O2 sensor. its not meant for it. it is meant to improve gas mileage. i mean you can do it but its not worth risking damaging the engine...... get a wideband!!!! :rant:

the stock sensor will read leaner as it gets hotter, and it will get hotter when you are driving faster.....



mike

do you guys run the stock o2 senosr and the wideband or just one or the other. i am just trying to find out if i need to get a bung welded in for the wideband

my downpipe has an extra bung welded on

i only have the stock sensor at the momment, 1 bung (hole) for me https://www.nopistons.com/forums/pub...#>/biggrin.png



mike

i knew that saying bung would get a remark or two.

i am to weak to resist that



mike

yeh so Ive seen the post about the wideband all over.

Thanks for the response.