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Hi all. Tried to search for the issue, but I didn't have much luck finding anything relating directly to my issue. Car has a stock blow off valve, plumbed back. Decided to make a plate to block it off, you know for flutter/dose/compressor surge whatever you want to call it. Car runs great, starts fine, idles fine, holds boost, flutters... But if I am idling and rev it slightly, then take my foot off the throttle, it hunts for a while then goes back to idling fine. Sometimes it drops to 100-200 rpm, sometimes just to 600, stalled a couple times. It doesn't ALWAYS do it. It is mainly a concern when I am in traffic and need to move forward slightly. Black smoke also comes out the exhaust when hunting. Rich? Is it because it was tuned with the plumb back blow off and it is expecting that air for idle and isn't receiving it? I have blocked the vacuum line going to the bov and the plumb back pipe. I haven't tried plumbing the bov back in and taking out the blanking plate. Will do that soon and report back. R34 gt-t rb25det neo Garret low mount on 18psi avc-r boost controller power fc supporting mods
