Compressor surge? Options

[BudmannG]

What would case compressor surge?

I have gotten many answers. I was told it was because my bov is to tight? I have a rfl bov. I did not recieve said spring adjusting washers. So what would I use in place of these washers?

I am at wits end with this thing. I try to pull a wot and when I hit 12psi it burps out the turbo and then I get boost spikes up to 20 psi.

[AWD DSM 1]

Compressor surge is not caused by a turbo with too much shaft play. Yes, a turbo that has been sitting with no oil in it will have a bit of shaft play in it. A little, but not much. More than likely, your RFL is set too hard. I know when I was playing with the setting on mine, you cannot get it to go soft enough for anything less than about 24psi. I cut the spring 1-2 coils back and it helped greatly. Running 18psi with no compressor surge it was not a problem. The adjustment washers should only increase the pressure, not lower it. The BOV runs off of vaccum. The vaccum in the intake manifold has to over come the spring pressure in the BOV in order to actuate the valve. The RFL comes with an already too stiff spring so you have to soften it a bit. Better to run too soft and stiffen it up than to run too hard and get compressor surge.

agreed