I have a stock bore 2001 ds piped jetted and filter. I want a cdi and want to know which one is best. I do a lot of duning and a little drag racing.

 

You may want to do a search. You will find all kinds of info that covers the cheaper units to the more expensive and feature loaded CDIs. Procom, White Brothers, Big Gun, Ron Woods, Vortex and ect. Happy hunting.

 

I have a stock 06 ds. I put the big gun cdi on it, and im very happy with the performance. I mainly ride trails and do some drag racing. I beat some stock raptors and stock yfzs this weekend. Also beat a kfx 700 with hot cams,clutch kit, dual exhaust, jet kit and cdi. Just putting the cdi on really woke the bike up.

 

Procom, Big Gun and White Bros are the same hardware - which means they are all made in China. All three however have a slightly different program in them. All three are among the least expensive CDI boxes on the market. As already suggested, you may want to do a search on the Procom box - alot has been said. But basically these are single power curve CDI boxes that have a raised rev limit.

Ron Wood Racing has a CDI box that has a pretty aggressive power curve with no rev limit. If you need a rev limit, because you dont want to accidently go over the save RPM level, or dont have a tach, then this one is probably not for you. But, if you are ok with no rev limit, its a pretty good CDI.

Vortex has a CDI with 10 pre-programmed curves. Each curve is slightly different. There are performance curves, which are similar to the Ron Wood Racing and Procom curves (which puts the power at high RPM), there are also torque curves, which puts the power at lower RPM, Linear curves which spread the power throughout the RPM range, and even a few stock curves. Some of each have different rev limits. One of the performance curves, and one other curve of your choosing can be switched on the fly via a handlebar switch. This one is expensive, but easy to work and very flexible.

MSD has a very advanced CDI that uses dip switches in which the user can set thier own rev limit and curve advance. It also includes spark plug coils that provide a hotter spark. Its the most flexible, but not as easy to operate as the Vortex. Its also quite large and also the most expensive.

There may be a few more out there for the DS, hope I didnt miss any.

 

dont buy procom..do a search on them and you will see...

i always recommend the vortex if you have the money

 

Vortex from HPReasearch

 

they are all the same.

 

Nope!

 

sadly your wrong. procom, white brothers and big gun are all the same box

 

procom makes white bros, big gun & there own CDI but that doesn't make them the same! White bros & big gun have there own specs that they have procom make the CDI. The timing & rev limiters are different.