Evo Vacuum Leak? Options

[Kazz5]

Tired of it trying die when I lift the throttle - especially after a blip when not really moving ... who knows the vacuum system and can tell me where to check?

Thanks...

[Kazz5]

I've not done another boost leak test. Part of that is because I'm so convinced it's not a problem. God she pulls like mad. But I should - hopefully will soon. Been putting too much time into the new daily driver.

Anway, mentioned it to Al and he wants me to send off my ECU for a reflash for an "idle fix" ... ?

Two things go through my mind here:

One is I can always send the ECU to Works and see what it comes back like. I'm confident the driveability would be dialed in by them and not quite as confident that Al's flash would - just my gut feel. Of course, I also feel that Al's flash might do me better in the quarter and that'd be likely the first event this car's going to see of note this year.

What else goes through my mind is that there's some other problem. And therefore I'll bring another symptom into all of this. It's all seemingly related to my BOV(s). Yes, I have two. One is an APS which splits between atmosphere and recirc. Now, the stocker is full recirc but notoriously leaky and doesn't hold boost. Mine leaked at less than 10psi and therefore why I got the APS.

What made me try another - full recirc, btw - was because of the dying at throttle lift. I've been feathering the throttle when I lift in order to make sure she doesn't die (she doesn't all the time but shit, you don't want to deal with it ever so you prevent it as best you can - ya know?). So I went with the Forge product which Al's big on. It came preassembled with the instructions mentioning more parts than came in the box - bad sign. So I installed it. It's adjustable - spring tension adjustable (just like their MBC) by turning the dial. Now I've had it dialed out and dialed up (28 "clicks") as it should be for my peak boost. The problem is part-throttle driveability. God knows if I floor the thing she's balls-out going for it. But if I shift and hit the next gear at part throttle or if I take off in a gear at about 1/3 or half throttle she goes and then starts sputtering - the excess boost being redirected back to the intake. But she goes back, I assume, pretty hard because it can make the car buck. Surge, right? Bad news. I'm still dorking with adjusting it to see if I can get rid of the problem but it doesn't look good.

So, the reason I post this here - anyone have any idea that these 2 might be related? I thought they might be and that's why I tried to get a good full-recirc BOV which apparently was stupid. Works sells one and Twin Turbo's selling his used but I hate throwing bad money after bad money if it's not the root of one or both problems. At this point I'm very inclined to put the APS back on because it did drive a bit smoother ... oh, and adjust the idle screw to dial in a bit more dependability at throttle lift as has been implied in a thread or two I've reviewed.

Thoughts folks?