04 yukon p0068 shuts down etc when i enter boost with maf failed

[nicholas]

04 yukon sbe single 76mm turbo 100lbs injectors runs great with maf enabled but as soon as i fail maf etc shuts down under boost i already maxed out predicted map max still not working i have heard that on some of the computers the only thing you can do is -50% in the ifr and -50% in the ve to get it to work around this i used this same tun on another truck with earlier computer only difference was the other truck had a turbo 350 and 60lbs injectors is there something im missing any help will be appreciated i have never had this problem before very frustrating

[5FDP]

Are you running a 2-3 bar speed density tune?

[nicholas]

yes 2 bar os the tune runs great with maf up to 10# boost but turning it up. i have used this same tune without maf on another truck as a base without a problem im starting to wonder about the pcm just weird that it works with maf but not without but i have seen crazier things

[5FDP]

You should posts the tune, that way someone can look at it and see if something isnt right.