Kingviper74

looking for some assistance here....
2011 mustang gt with a Paxton 2200SL installed with all the various things also attached.
I had the car tuned about 5 days ago and everything was running great. Then a day ago I started losing power and all I could hear was the woosh sound you hear when you normally let off the gas back when it was running normal.
So I pulled the bumper off then figured I check all my t-band clamps on every coupling. All were still tight and no holes present. So I started my car and at idle seen my tial BOV was open which it should be because of the vacuum. When I shut the car off it closes as it should. But when I rev up the rpm alll I hear it the woooshing sound. Had a friend come over and he confirmed it was staying open as I went from 3k - 5k.
So I took off the BOV (not fun gaining access by the way after everything is installed) and checked it out. Both O-rings were still in tact. And so was the bladder but I guess that’s obvious since it was opening up at idle. Also the Green spring was present and intact. I put the lightest of coats of CLP gun cleaning oil and preservative on the oring think maybe it was just sticking in the open position.
I reinstalled everything back to how it was and still I’m getting the same results.
I disconnected my boost gauge from the system as well (sealed the open end of the t-fitting) to perhaps count that out as a bad actor. Same results... if it matters yes I’m hooked off the line coming from the brake booster per the install instructions.

Any suggestions? My tuner is wondering what I did and did nothing. I haven’t even raced it since he did the tune.

Update I disconnected the brake booster and connected the line straight to the bov... to eliminate the possibility I had a leak in mybrake booster diaphragm. Still same issue.

At idle on

On the road with a load on the engine... and the loud BOV still screaming