Dimeomboost

My 5.3 is finally done new turbo finally mounted and it starts great runs great idles good but when I start hooking up vacuum lines it starts to big be sluggish and runs rough unless I unhoom the charge pipe it gets a little better but not much it has a start up tune but not a dunk tune yet will this solve my issues or do I need to figure this out before hand it's a speed density setup with both front o2 sensors hooked up I just want to be where I need to be before loading up and heading to the dyno it's a fuel injected stock pcm motor no mass air meter

JoeNova

Which vacuum lines are you hooking up?

forcd ind

iTrader: (7)

Prob needs tuning once all the sensors are hooked up, MAP is prob throwing it off

coltboostin

Give it an air bleed until you get it tuned- will help your idle and tip in.

The BallSS

iTrader: (9)

I had to adjust the throttle body opening when I first started mine to get the IAC counts where they needed to be, it needs to be between 30-60 counts on your hand held. Mine wouldn't idle either but after that it was much better.