When at idle it jumps around from 14.5 to 15.5 approx. When under full boost it goes off the reading rich below 10. When im crusing, its similar to idle, and when i decel and take my foot off the gas it goes off the reading lean. Im assuming that when my foot is off the gas the ecu cuts fuel, thus the lean reading. Any suggestions, opinions. TIA

 

That's normal. When I had my vortech tech it used to fluctuate between 14 and 17 at idle. I think I saw you have a vortech on another post. If you have the stock tune it runs real rich at full boost so you will see
----- on the wideband.

 

Normal readings on the AEM, but try to get the car tuned for 11.5'ish at WOT.

 

so its normal to go totally lean when decel with foot off the throttle?

 

yup mine goes off hte chart when i decel. Under WOT i read 11.2, 11.1 its normal

 

Yes, that is normal. As you take your foot off the accelerator pedal, no more fuel is supplied to the engine thus causing your AEM to bottom out lean.