rough idle and boost gauge lit up in park.

[Underboost]

Thanks bison for the info Ill have that welded then. Do you think it would cause lag though? Hopefully the problem goes away after the map sensor is out.

If the crack was before the turbo yes it would. Anything after the turbo doesn't matter. The less back pressure the better. LOL It's probably helping you.

 

[Underboost]

I took another look at the sensor and there is a brown plug that is coming off of it that isnt connected to anything. The sensor is plugged in though. Any idea what it is?

If I'm not mistaken it's for the digital dash set-up.

 

[Tony87gn]

ah ok thanks