Originally Posted by 805beemer
Here's an old log from my car with the surge on stage 2+ sport. You can see it's making very little boost until 4k rpms, then comes in all of a sudden.
This graph isn't very good... You should isolate 3rd gear and remove RPM so the scales are a bit better. Also move IAT over to your secondary y-axis.
I've had this problem since September... I'm itching for the fix!