Also Ion when i revert back to the flash tune do i need to do a read then? or i just pick the 2nd option and type in the FLASH there

 

The 0.xx V readings indicate you may have a vacuum leak. Check all your vacuum lines/fittings. If you are getting unmetered air into the engine, you will get a very lean reading just as you are.

 

which vacum lines/fittings do u speak of? and it only runs this lean during WOT...normal driving is fine (02's ave of.42/.43)

 

All the vacuum lines that connect to your intake manifold. You should also check that the intake manifold is sealed to the heads. A good way to check for a vacuum leak is to spray some carb cleaner around the area where the intake manifold meets the heads. If the engine revs up, you found a leak.

Check all the vacuum lines/fittings that connect to the intake manifold (brake booster, evap, etc.).

A vacuum leak ill be more evident at WOT than cruising, as far as O2 readings are concerned.

 

But, in NO case do you want the A/F ratio to be leaner than 14.7:1 at WOT... no matter how much leaner it is. Leaner than 14.7:1 is VERY lean at WOT. Typically you want it aroung 13.0:1 and that will not produce 36mV readings on the stock O2 sensors. I've reviewed hundreds of these logs for people, and I have NEVER seen one drop that low. Yes, a wide-band would give him the correct numbers, but given the data he has (I have been checking his logs) he needs to find out what is going wrong.