Fiat SPI ignition advance?

[pedrofromspain]

The Regata 100 IEs Weekend i have just bought does not run that well, SPI just has no top end power and the car is generally gutless.

At present i can't get a Idle Air Valve for it so i have converted it to carb, mainly as it ran so badly .

*Now that the throttle position sensor and idle valve are disconnected what effect does this have on the ECU and the ignition?
I suspect the ignition is not advancing ??

What are my options if i go the carb way, do i need to convert to a points or different distributor?

These IE cars are very rare in Australia, i have two and neither ran well.

Any ideas?

Pedro