I have replaced the brake booster hose and am not leaking brake fluid anywhere,. I also have no engine boost leaks either, I am just at a loss as to what the issue can be. I know the stall cant be related to the installation of the Akebono brakes. It was stalling on decel and when I clutched originally but that was fixed by cleaning the AAC or IACV (I get confused which is which.).. then the brake stall started happening,,.. unless there is a hose up in the fenderwells or somewhere not visible from the looking in the engine bay,. Ive replaced every hose in the car at this point . no rubber or silicone part/hose in the engine bay is older than 3 years. Ive reached out to ILOVEBOOST and another forum member in the past will probably be doing that again soon, as I am frustrated with it. may be a good use for my Christmas bonus.... give it up to the Z gods and get this car safely running again.