Yet another weird problem

[Chaosweaver]

Alright, so since I got a new MBC my original boost controller setup (Teed off of the BoV) started causing problems. So, I fixed the lines (made them solid) and now I'm getting the pressure out of my TB nipple for the MBC... Now comes the weird little problem, it starts, idles HORRIBLY (420rpm) and has 5 vacuum, until it warms up that is. After it warms up, it has 15-20 vacuum and idles at over 700rpm... So, I have no idea what the hell is going on with the car now .

 

[rarest_90_DsM]

Do you still have all your purge valves and emissions stuff hooked up?

 

[Colt4G63 also]

I don't think your MBC is supposed to be hooked up to a vacuum source. Depending what type it is, you may be introducing a vacuum leak. Do you have a boost only source you can use?

 

[Chaosweaver]

I don't think your MBC is supposed to be hooked up to a vacuum source. Depending what type it is, you may be introducing a vacuum leak. Do you have a boost only source you can use?

Throttle body nipple is it for now, until I can get the J pipe welded up that is. It used to be fine off of the BoV until I got the Turbo XS one because my old one took a shit. It runs pretty weird until it warms up then runs fine... I don't know whats going on to be honest, there was no problem before. I checked all the vacuum lines and they're good.