I have the JB+ and set to the max setting with 93 octane it feels amazing. Even at 75% setting with 91 it feels much better than stock. And it feels better with partial throttle too, not just WOT. Ambient air really affects performance. When its below 70 degrees, it really feels fast. (before...
Just noticed this same thing on my car. It occurs in two situations:
On tight on ramps when turning right
When leaving my garage, clicks pretty loud at slow speed. Seems to go away soon after driving.
Did you figure out the cause?