ok heres the problem early this morning i ran up a new tune and tried to turn the maf back on but well it didn't work at all it ran like butt. i tried this becouse i've been tuning it alot lately and i got the thing to idle like a champ and it WAS runing GREAT well i turned the maf back on and it fired up but i got down the road and it started acting up again so i stopped and disabled it again but it did not go back to normal it started acting like crap again and now it will barely idle at low speeds while not hitting the gas and i have no clues.

 

why are you disabling the MAF??

 

I have seen what you're talking about. It could mean that the Injector Flow Rate constant is not quite right. If it's too low then the VE table values are too high and if it's too high then the VE table values have to be scaled up with the change.

If it runs right without the MAF but poorly with it, test with the MAF plugged in:
- if trims are more positive with MAF than without, then Injector flow may need scaled down and VE scaled up.
- if trims are more negative with MAF than without, then injector flow may need scaled up and VE scaled down.

I went through this with my own truck and I hope I'm remember correctly how I resolved it.

 

i used red hard supra's maf thing excell. i got it disable to tune the ve becouse i was running a 4.8 and now i have a ls1 with the lpe gt-1 cam its all in the sig. i got it all down good and all the sudden i turn the maf back on and it sucks is there a chance i got some k&n oil on the maf would it couse it to run like butt or is this cam just not going to agree with the maf.