My missfire under boost was a bad coil pack. But you need a wideband and a why to log which sounds like what you are doing. I would not "go into boost" until you have some way to watch what is going on....

 

^^^yeah id get a wideband soon

 

hey thanks guys im gonna start checking things, i havent been driving it since but when i find out ill post the soultion to let yall know

 

ok so i started testing for problems and the first thing i did is what farm ruck said and take a dirve withe the fuel pressure gage and found is that i had good fuel pressure at idle but as i went up in load it started dropping and when boost came in it dropped down to as low as 20 psi and when i shut the truck off it blead straight to 0 psi, so i changed the pressure regulator but turns out it was the 12" line that goes from the fuel pump the the top of the pump, it had a split down the side

also i bought the wideband and also got a perminate fuel pressure gage
and bought the ngk tr6 plugs, so ill take it out tomarrow and see how much better it runs..

thanks for all the help.