Help needed

So is it a new carb or one that was on the car last season? If its last years carb go through it
If new dial it in.

Yeah new carb but was fitted at the tune shop & set up on the dyno was running perfect when I left.....A week later go to the track......I haven't touched a thing & it's not right.

My tuner thought it was fuel delivery...But after a little fiddling we think it's more that the 35Amp Alternator hasn't got enough output & the ignition is braking down.

I am more interested in what alternators & ignitions everybody is using to compare.
As I said I have electric fuel pump, electric water pump & fans pulling power I don't think the alternator is coping.

Thanks Oz