Fast xfi
 

Can anybody tell me how to set the timing in easy to follow English. The instructions are a little confusing to me. This is on a TPI 350.

Re: Fast xfi
 

Go to ignition parameters. Set the box next to fixed ignition timing to whatever you prefer it be checked at (I use 30). Then check the box for fixed timing and click apply. Check your timing and if it doesn’t match move the distributor until it reads 30°. When done deselect the fixed timing box.

Re: Fast xfi
 

Shouldn't you be changing the crank reference angle? I thought once the distributor was installed correctly and rotor phased, you shouldn't need to move it?

Re: Fast xfi
 

And that's the way I read the instructions but it makes no sense to me. The instructions don't say anything about moving the distributer to set the timing.

Re: Fast xfi
 

When getting into computers back in the 90s realized I had to think like the computer my process didn't matter to it. Plus you have to understand what it sees and what it doesn't.


The ecu has no way to know what the actual timing is. It goes to the timing map and commands what ever the value is in the cell being used.

The timing offset helps get the actual timing close to what the ecu will command after phasing but you still need to match it with a timing light to match what is commanded to the actual value.

Have used the same method described above plus check it again after releasing the lock to match what cell is being used live on the laptop.

Re: Fast xfi
 

Jimmy I'd like to know how you put a carb on one of these things.

Re: Fast xfi
 

I don't think that would work, but an MSD Grid might be helpful!