My BOV is on my Intake side similar to how you have your's setup with the exception that I have a S13 240sx. What type of piping are you using to recirculate back to the maf that you have going from your BOV back to the exhaust side?
I've had a boosted RR motor for 3 years and 50K miles. Up until I misshifted it ran awesome. Made 330whp and could get about 25 mpg. I swapped it out with a 31k RR just a few months ago and it's running just s strong. I run 12-15 psi on it. S3R cams.