Dodge Garage BOV mod, now compressor surge!!!

[dont_blink]

WTF? I thought this was supposed to increase holding pressure, not stop the operation of the BOV. Before I did this it worked flawless. Now instead of blow off I get compressor surge and you can hear it hard when I shift. There is also oil coming out of the exhaust bad when the car is sitting at idle and the shaft has more play than it did a week ago. I just did this mod last night. What the hell!!?? Even when I hook the "port" back up to the intake piping before the throttle body it still does not work at all. Weird thing is...I can push the BOV open with my finger when it's out of the car. What gives?

 

[compression]

when i did the dgm it worked fine my bov will hold 30 psi no leaks and releases as soon as it sees vaccum, did you drill the right ports? can you take a picture of you bov to see whats going on here. and you sure you have a sufficient vacuum source?

 

[dont_blink]

I drilled it exactly the way it said to do it and as far as my vacuum source goes, maybe that's the problem. I have a n/t manifold with only one small vacuum nipple that has a 3-way t on it. A line gets t-ed off to a t that feeds my boost gauge and then to my afpr. The other line from the t gets connected to a line that t-s off to my BOV and then to my MBC, which then runs to my WG. The nipple I drilled into the BOV is connected to the upper port on the front side of the throttle body which is a hole drilled into the body before the plate. Could all this be an issue? What if I hooked the factory port on the BOV to one of the top ports on the TB that draw air after the throttle plate?

 

[2gGSX]

The problem is most likely as you stated yourself--the vacuum signal to the BOV is too weak. I had the same problem when I did it, and all I had it T'd off to was my MBC. Try getting an uncompromised vacuum source to the BOV and see if it helps.

 

[kenamond]

Sounds like the surge may have wrecked your turbo. Disconnect your WG actuator arm from the turbine housing lever until you get things straightened out so that your turbo doesn't boost anymore. If the shaft play is excessive and the turbo is expensive (I wish we could view profiles easily while composing a post), you may want to consider a rebuild before the turbo fails hardcore and destroys the shaft, wheels, or cartridge.

MBC shouldn't run off the BOV line. Most MBCs bleed air (even ball/spring) which could affect the strength of the vaccuum signal. Don't know if that's the problem or if the BOV was crushed too much. Don't know dick about the N/T IM, so I have no ideas for a better vac signal source.