what's wrong

 

please some one tell me what's wrong with my car

 

How about you tell US what's wrong with your car since we have no idea. I can't just look at the winaldl data and say...oh, yeah, you're having such and such trouble with such and such, looks like a hesitation around 1200rpm....., doesn't work that way.
First you tell US what is going on with your car since we don't know if your car is under water or just sitting in your driveway. All I could tell from the data was that the rpms were below 3000, you didn't move the TPS much and your o2 values look normal

 

it stalls at low rpm all the time

 

Check your base timing, not enough and it'll stall. If it isn't getting enough fuel it'll also stall and backfire through the intake if you snap the throttle open real quick (while in gear).
Take more logged data. Looks like you're just running too lean, try cranking the fuel pressure up a little and play with the timing.
Last resort, go change your fuel filter. If you can't remember when the last time you did it or haven't...it's probably a good idea. Only like $6 and 15 minute job. Also adjust the fuel pressure and see if that cures the problem.