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5l auto vt, now for the issue. I have noticed that when u put the boot into it, it revs up a bit aprox 1500rpm and then its like it looses all power to the engine and wants to stall out, then u let foot off and it goes back to normal, but u still cant put the foot down again, but it will let u use about 3/4 of the throttle when taking off, only does it when driving, revs fine when in neutral or park.just done a log on tuner pro with and without load, without load revs up no problem with it stalled up it gets to about 1500 then just cuts out like the keys gets turned off, all dash lights come on

Post up a log?

sounds like it could be a fuel supply issue ? but yeah definitely a log will tell more.

no load log

load log

hope these help

Please dont start new threads with a copy/paste of your first post here if you do not get an answer.

Is this a standard memcal/bin or are you playing with it?

Can you drive using light throttle ok?

dives fine with light throttle and heavy throttle, but u cant take off hard,

its all standard memcal and im not trying to stuff with it just trying to get it to run without issues

well if its a standard motor and tune then there must be something mechanical that has changed to cause it to do it ....