I reved to 4500 and dumped the clutch, the road was damp, as it started to spin I floored it. The tach went to about 6200 and the engine bogged. The rpms dropped and then took off to 6200 and bogged as I let off Sounds like a rev limiter to me. Is it to low? and is there any way to adjust it?The car wont see this type of action often.Prolly wont even get driven maybe once a week.
P.S. The LSD worked great:

 

I believe the fuel cut related to RPM kicks in at 8300 or something. I'm not aware of it being adjustable (doesn't mean it's not), I thought it was programmed in the ECU.