I modified my Greddy BOV by removing the lighter spring inside the BOV, leaving the heavier one in. This solved the problem of the car stalling at low rpms, after reversing and and pulling forward and the stuttering at 0-4 lbs of boost. However now I experience fuel cut when I'm in 5th gear at cruising speed (68-73 mph) and I will get fuel cut and a SES light thrown. I have since put the stock BOV back on all problems are solved, however the performance aspects of the BOV I miss very much. The intake helps the turbo spool a little faster but the BOV made everything better. I plan to get an S-AFC II and take the car to Vishnu (here in CA) for tuning. I drove a friends EVO the other day that was tuned by Vishnu and I didn't want to take his car back to him. Any ideas on this guys?