CDI upgrades

[quad]

I was just wondering if the CDI upgrades you see selling are safe to use?With the extra rev ability,are the internals,valves,and so on going to hold up?What are the benefits of using them?Will i notice a difference on a stock 400?Any answers will be appreciated.

[Natertot426ex]

Most CDI"S will just let it rev higher. Your motor will survive it as well. There is only one thing to do when you buy one. DON'T buy a white brothers. If you ride in the cold it won't allow your quad to start. I know there is a good one out there that doesn't do it but I can't remember what on it is.

[brandonpeake]

do a search

someone needs to make a sticky about cdi boxes, anyways
www.gtthunder.com
laz sells one thats a good one, i have not heard about those vortex ones yet but they are really high
but there is probaly 20 threads on that in detail