Quote:

next question,i would like using my MSD 7 with one coil,this has a lot of fire power and multiple sparks per cycle, can these systems keep up with it?



Absolutely. The XFI just drives the white wire as was said. I have set up quite a few MSD 7 systems with the XFI. The only consideration is to make sure the MSD is well separated from the XFI because of the electrical noise the MSD creates.

You would not use the spark retard or any of the other features in the MSD. The XFI handles all those, including rev limiters, but you can use the MSD rev limiters if you want.