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View Full Version : CDI / Rev Boxes for the 400EX


fastforward400
07-24-2004, 08:15 AM
Ok, here's the deal. We've all seen the CDI boxes in magazines, catalogs, eBay (if your like me). I want one to advance my timing and bump up my limiter. Which ones do this and which ones do not. I've seen that Big Gun advertises 2hp gain. I've seen a Punisher rev box on ebay promising advanced timing. Any help would be great.
Pappy
07-24-2004, 08:17 AM
id be calling GT Thunder and talking with Laz. his rev boxes work and dont have the starting issues associated with the "bike" cdi's
Silverfox@C&DRacing
07-24-2004, 09:16 AM
the Magnum rev boxes also work well I have had one on my 416 for 3 years no starting issues either.
cdalejef
07-24-2004, 09:29 AM
GT Thunder has the best one I've seen. PM Rico, he has one on his 416.
TC426EX
07-24-2004, 10:02 AM
I agree, the best rev box that also increases the timing is the GT Thunder...
quadmx7
07-24-2004, 05:33 PM
me and my cosuin have never had trouble running our WB boxes.
Florida400EX
07-24-2004, 05:40 PM
GT thunder.. I have one coming in the mail!
fastforward400
07-25-2004, 04:11 AM
where can I get a gt thunder? I thought about buying a cdi from http://www.procomengineering.com/ Their's are only $45 and they say they increase horsepower.
07-25-2004, 07:15 AM
Originally posted by quadmx7
me and my cosuin have never had trouble running our WB boxes.

Give it time...:(


I'm running a Low RPM curve GT thunder box in mine and it's great for the trails. www.gtthunder.com
fastforward400
07-25-2004, 11:18 AM
Originally posted by Rico


I'm running a Low RPM curve GT thunder box in mine and it's great for the trails. www.gtthunder.com

I've tried that web address and it doesn't list a cdi for a 400EX, unless I'm just not looking in the right spot.