[rtmathes]

I did some searching and found some info but could the o2 sensor be the problem? The truck idle is not very good the biggest problem is when i try to acclerate hard it boggs down and just want go for a few secs and then pick up. I also read it may be the MAP sensor, but the MAP is new. It has a new fuel filter I rebuilt the TBI (it idles hella better now), plugs wires cap and rotor all new. If i have a vaccum leak I can't find it I tried the hose to the ear method and the starting fluid method. I put a pressure guage on the fuel line and it was good but the way I had the guage hooked up was shady. Is their anything I'm missing? could the o2 sensor really be causing lean condition? thanks for your help,
Tommy