You should run a lot higher gain number. Like 5-6. When you turn the gain down, it makes the pump lazy as the voltage applied is less. There are applications whereby low gain settings are needed. Not on a Buick.
If you want to run less alcohol, put a smaller nozzle in the pipe and turn the controls up. Typically on stock turbo cars wanting to run low boost, this is how they are set up.
The "Test" button simulates the system activating at (turnon)5 PSI. Its a progressive kit, as the boost rises so does voltage drive to the pump. If you turn the knob to "1" it will not have enough drive to run the pump when you hit "Test"... unless you crank up the "Initial" control.
So as the kit is delivered, typically the Gain should be at least position 4 for repeatability.
In laymans terms.. its like trying to start an engine when the battery is down to 10 volts.. it spins very slow.. same as trying to spin an Alky pump when it only gets 1 volt. If you bring the voltage up.. things become more predicatble.
So what I would do is turn the alky gain up to 6.. and start working on dialing in the airfuel on the chip.. you'll see things pickup.
Julio