I can't find much info on the 8380 except what's on the Summit site https://www.summitracing.com/int/par...8380/overview/ . Any rev limiter facility would have to be controlled from the separate "ignition box".
Assuming your dizzy is working OK, is there a problem with fuelling? Your symptoms could be fuel starvation in which case you might want to check fuel filters & pipes as well as the fuel pump.
[I might be well off the mark as I don't know the history of your car/installation ]
ETA Ballast resistors are only there as an aid to starting and shouldn't affect the car once the key is released from the cranking position. It doesn't mention that you need one anyway
Justfound the installation instructions https://static.summitracing.com/glob...0_frm23365.pdf which show the installation wiring etc.