Is my AEM wideband reading correctly?

[Nofear20]

I got my wideband installed yesterday and this is my first time using a wideband so I just want to make sure its working correctly.

First of all at idle, the gauge normally stays around 15.4 or so. When I first star the car it will be at 14.7, then it climbs up to the low to mid 15's and stays around there.

When I cruise around, this thing can jump around almost as much as a narrowband. Sometimes it will be in the 15's, then it will go down to 13, then up to 16. Sometimes it will go so lean it just reads _ _ . _. Other times it will stay around the 15's and not move.

Wide open, it goes way rich, all the way to 10, then will jump back up a little

It also shows that I run lean between shifts? The LED will go all the way red.

I am running a 16g at only 14 lbs, you can see all my mods in my profile. Is there something wrong?

Thanks

 

[2gGSX]

It will read -- when you are off the throttle, including when you're shifting. Have you checked for exhaust leaks before the wideband? If you placed it where the rear O2 sensor was then chances are good you have leaks before it.

 

[T is for TURBO]

When you first start the car, it takes a little while for the O2 sensor to heat up. Also, like said above, your car goes lean when your off the throttle, and between shifts, plus when you are WOT it should read rich, that is normal, I'd be concerend if it didn't. Actually, I believe if you are anything above 4,000 RPM the O2 sensor goes into closed loop and will read rich. (someone corect be if I'm wrong)
Sounds like its running like it should, the variance may be due to a leak, as mentioned above
-shawn

 

[2gGSX]

When you first start the car, it takes a little while for the O2 sensor to heat up. Also, like said above, your car goes lean when your off the throttle, and between shifts, plus when you are WOT it should read rich, that is normal, I'd be concerend if it didn't. Actually, I believe if you are anything above 4,000 RPM the O2 sensor goes into closed loop and will read rich. (someone corect be if I'm wrong)
Sounds like its running like it should, the variance may be due to a leak, as mentioned above
-shawn

It's not necessarily above 4000 RPM, it just depends on whether or not you cross the threshold airflow that puts you in open loop, not closed loop.

 

[Nofear20]

I am pretty sure I have no exhaust leaks. The turbo back is only a couple months old.

 

[T is for TURBO]

It's not necessarily above 4000 RPM, it just depends on whether or not you cross the threshold airflow that puts you in open loop, not closed loop.

ahh.. I was wrong, imagine that
Thanks!

 

[Nofear20]

My car actually idles a little leaner then what I said in my previous post... it idles like 15.8 or so. Bad?

 

[2gGSX]

My wideband hovers right around 14.7 and doesn't deviate as much as yours seems to. It also tracks based on the narrowband O2 voltage. Can you post a log of RPM and FrontO2 voltages while idling and cruising?

The fact that it runs leaner at idle is what makes me think there's an exhaust leak.

 

[Nofear20]

Unfortunately this is the only log that I have, and it is a 3rd gear wide open pull.

BTW I just replaced the front o2 sensor last week

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