Ok, now I've tried searching but looking up "boost leak" yields waaay too many results and my situation is very unique? To start off I have a 98 s70 t5. I have an ipd stage I tune, hallman pro mbc, ,a boost gauge, ipd short ram intake, the snabb intake pipe, and the ipd hd cbv with the red spring, and anaerobic sealant to help seal the diaphragm to the cover. My car is set up to run roughly 16 psi. At partial throttle my car will build boost like it's supposed to, hold for a second, and then slowly drop to 0. Now the weird part is at wide open throttle it'll will build to 16, and then hold, maybe drop to 15 psi but that's it. So I have a partial throttle boost leak/WOT no boost leak. I know it's crazy, but maybe there's someone else out there who has experienced this???
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