Kev, I don't have the car at the moment.I was talking to my tame electronics geek and he pointed out that the biggest and best capacitor on the car was the battery itself so he suggested taking the alternator ouput directly to the battery on it's own cable avoiding any junction points with power sup...

Kev,
Alternator is solid mounted.Best result was with the Bosch alt. attached is a screen shot of that one with 45amp load at 5000rpm in the workshop,testpoint was the output terminal onthe alternator.
Martin

Kev,
No battery cut-out switch fitted,not required for track days

I built a track day car out of a BMW E36 M3 evo,the car is caged and 350kg lighter than standard,it does sub 8 min laps at the 'ring and sub 3min at Spa. Under sustained high revs,full throttle use like the the 2km straight at the ring the engine will suddenly start running very badly-top speed 30mp...