I was just wondering for anyone with dashhawks what your sensor 1 bank 1 voltages are looking like? I am currently running at about .875 with tune and intake.

mine are around there too...and i believe that is a lean number...should average about .5

you should be in the .900's imho, my car runs about .920 currently (I have seen some tunes up to .940's), which is what it ran stock, after I added the roto-fab it was reading like .90x, so I added more fuel my adjusting the MAF Freq. to account for the extra air, I think its running a little rich but not that much (LTFT are a little negative while driving around). Stock G8's run lean and adding a intake makes it worse.

Narrow bands are not the best way to tune for sure but they are better then nothing.

Hopefully Johnh can chime in.

I always thought the important thing when watching the O2 was that it would switch between lean and rich (high and low). If you are running constantly high (or low) that would indicate a problem from what I've learned.

When at WOT the o2's will stay steady, this is the reading you are looking for. At cruise they jump around and you should not pay attention to them.

I am not using my NB to tune but I do have a WB installed. With my VMS tune, I was running about 12.0 AFR under WOT. I never tried it with stock parameters. I leaned it out to 12.6-12.8 under WOT

I am not using my NB to tune but I do have a WB installed. With my VMS tune, I was running about 12.0 AFR under WOT. I never tried it with stock parameters. I leaned it out to 12.6-12.8 under WOT


What are your NB o2's with the 12.6-12.8?

What are your NB o2's with the 12.6-12.8?

I see wide band a/f and stock sensor O2 readings next to each other every day. They both read out on my laptop when I am tuning a car on the dyno.

What I can say for certain is there is no accurate correlation between the two ever.

It seems to depend on the temperature and the age of the stock sensor mainly. For example O2 temperature changes dramatically when headers are added, so do O2 mv readings.

Was just wondering, I have heard .920-.940 is good or ok. Below .900 would not really be good. I know all o2's vary alot, was just wondering what high 12's = (.960? more?) or are close to in NB mv. I know you cant tune with a NB but I have my o2's very close to what they were stock so I feel .920's are fine on my car, might should even add some more fuel, I was getting some KR after the roto-fab because it leaned the car out some.

I will get the car dyno tuned after I get headers, I dont think its worth it untill then.