I got the first replacement CDI under warrantee.

After I built up the 904 motor, it started hard, so I went to the Procom. That started better but did not match up with the extreme cam profile I was using at the time. That CDI went to another member on BA and it ran great with their setup.

I went to the Firestarter for the 904 and that really ran well.

Later I built up the 1100 motor and changed to the Firestarter 1100. That one is really impressive.

FWIW I still have a stock CDI and a Firestarter that I am not using.

05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter