so I have an issue that's really annoying, I'll start my car drive it and everything is normal, then I'll turn it off when I get to my destination, when I go to start it, it'll start up but the boost gauge shows 0 vac... and the idle is rough, I usually have keep on the gas pedal to make sure it's still idling... it'll stay that way for a lil bit then go back to normal after I drive around...

any idea what's the issue?

 

Are you running dual maps? I've seen someone on e85 map while on pump and it ran really funny such as no vacuum.

 

no I run a single e85 map...

 

Bump for assistance

 

you have a boost leak somewhere.

you need to do a boost leak check, pay attention to any hoses on the IC pipes and also the throttle body seals.