Spike,creep, fuel cut,spark,detonation?

[ehsee]

which one is it?

i dont know where to begin...

First thing I noticed when accelerating (typically at WOT but not always) is my boost gauge spikes to 20 psi. Which is what I have my MBC set to. It will spike then drop to and hold around 10 psi, then move up accordingly. The psi never passes what I have it set at.

Also when accelerating typically around 4k RPMs my engine will cut out and start popping. the popping is comming from the engine bay not the exhaust. it also seems like it will not accelerate until I let off to half throttle.

I dont know the difference in symptoms in boost creep vs fuel cut. It doesnt feel like a hard bucking when it "cuts" out possibly a miss-fire?

So, what causes popping, no or slow acceleration and spikes in boost?

 

[rEclipserGST]

Boost Leak.

 

[ehsee]

Good enough, I will start there and check back if its not a leak.

 

[ariman]

if you have a pcv system check it.
happened to me a long time ago.

 

[ehsee]

airman.

Am I just checking to see if the valve is clogged? Or should I be looking for something impaticular to the system?

Thx