o2 sensor ?

[blown 04]

Hello everyone i just got my hp tuners in the mail and i trying to learn how to tune my truck. Truck has been idling very rough latly so i decided to do a scan and i dont realy know for sure but the only thing i see that might be wrong are my o2s They have a nice sign wave when im up in rpms but down low they are very slow, sometimes hang at top and bottom for awhile. is this right? also i have been able to do a miss fire test, or cant i do that?

thanks for any help
Benji w

[EC_Tune]

That behavior is normal for 02's because the engine speed precludes a faster o2 transition.

Post a scan so we can see if it's normal.