Vortex Ignition

[rob-u/21]

Has anyone put a vortex cdi on your 440ex. Did you guys do the flywheel mod as well. I saw it on Duncan Racing site. How where the power gains.

[Colby@C&DRacing]

we have used the vortex on the 400ex and they make good powergains I have not used the flywheel mod with it.

[bayou boy]

what is the flywheel mod for this ignition?

[rob-u/21]

what is the flywheel mod for this ignition?

Duncan racing doesn't specify what they do. I'm thinking they shave some weight off of it like other do.