[quattrorunner]

I think I know the answer but wanted some confirmation. I've been tracking some odd running issues and have a couple figured out but
1)why is my boost gauge going slightly beyond 1bar and then spiking past 1.2bar on throttle closing? I have a 1bar Spring.
2) And also I'm getting an issue where the car acts like it's hitting a sandbag when I lift the throttle before pushing the clutch. Hard to explain but it never did that before and I suspect the throttle plate is getting pushed closed by excess boost when it's still slightly open.
The issues I think are figure out are the plug wires. I'm getting a set soon. It's a high rpm stumble. Could that be related to the other issues? Vague I know. Thoughts?