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I can't find any info on it.

So I suppose the dist on TBI works like a carbed engine, and is adjusted by the computer.

Anyone know how to set base time on it then?

As far as the fuel, I would assume if the dist has nothing to do with it, then there should be a pressure regulator that would up the pulse for more load?



The magnums use a crank sensor for sequential fuel injector timing and use the distributor pickup for ignition timing. On the inside a EFI distributor works nothing like a carb distributor, but on the outside you twist it to adjust base timing the same way as a carb distributor. I would also suggest 10* BTDC as a good baseline to start from.

On a TBI setup, the distributor typically has a pickup that tells the computer each time the rotor is at a certain point in its revolution. A TBI dist usually sends one pulse to the computer per revolution and the computer uses this information to help caculate spark advance(in addition to the base advance). Also a TBI computer will use this signal to time the TBI injector pulse. So the TBI injector will pulse at the same time in the engine's revolution, every time. This signal from the distributor is one of the inputs the computer uses to calculate injector pulsewidth.

Fuel pressure does NOT increase on the fly to account for engine load.