What it does is confuse the CAS sensor, thus not allowing the PFC or Engine comp to know when to fire the coils.
The knock values only show up when there is a big back fire and it's only the shock of the fire ball in your exhaust that is making that knock.
If you tune the gain on the Bee*R down to a reasonably level, it doesn't really sound any different to your normal fuel cut limiter.
I can build about 5 psi at 0 kph with the Bee*R. lift hand brake, depress right foot, stutter stutter, boost up.
It's tops..... but traction is a litle bit of a problem. I'll be hooking up to the clutch before deca.