Okay well I have been reading alot of these posts about the dyna cdi and the brute force. What I am unsure about has to do with the misfire and stumbling problem with the brute force. Alot of people say the dyna cdi enhances this problem. I have a dynojet kit and I do not seem to have a problem with this at all. Will the dyna possibly cause there to be a problem or does it only enhance it if you have the misfire problem?? Thanks in Advance.

 

It only enhance it if you have the misfire problem.

 

Just to let you know.. I have the DynoJet kit on my B.F. along w/ the HMF slip on. My Kawi dealer never could get the miss out of mine. The Factory "miss' is due to an incorrect needle in the front carb. The DynoJet kit provides new needles that will cure that problem.

I have the DG5 now and their is NO miss. Something w/ the Dyna caused mine to miss and I'm 99% sure it wasn't from being lean.

 

Mental,
Any advancement on timing will accentuate a miss if there is one, a module, advance key will do the same. Dyna is the best way to go modules are old school they can be built for less $10 and are being sold for more than $100. Will they have the benifits of a cdi not at all. One more thing Dyno Jet jets are not do not have the volume of the OEM jets, the largest jet on Dyno is smaller in volume than the OEM jets that came with your quad.

 

Thanks alltoys, saved me from getting dyno jet kit. I got the needle change and added shims under them, went up one size on mains, stil slight miss with dyna cdi

 

I have a miss with or without the Dyna CDI box, dealer installed new needle and it made no difference. Dyna CDI does amplify my low RPM miss but it's not like I can't ride it, just a little annoying but that is offset by the kick-*** power it adds.

 

BBertram has a BF he remedied his stutter with the carbs I understand the dealers were supposed to have a fix from Kawi but not sure. Get in touch with with Brent I am sure he can solve the stumble problem with the carbs. All I know is DJ jets are not worth the money they charge!!

 

Mine had a slow speed stutter only when cold before the Dyna was added. It went away after the bike was run for a few minutes. I added the Dyna and it amplified the stutter when it was cold. When the bike was to up running temp it had a stumble at about 1/4 throttle, but you really had to try to find it as it was very minor. I added 2 shims to the stock front needle jet and the stumble is pretty much non-existant now when the bike is warm. If I really hunt around the 1/4 throttle position I can sometimes find a slight hesitation. Under normal riding the throttle response feels great.

alltoys, I thought that dynojet main jets were sized larger than Keihin jets. For example, Dynojet 148MJ is equal to a Keihin 162MJ. Not true ???

 

I was also told that DynoJet sizes are bigger than OEM sizes. I was told to add +12 to a DynoJet size to equal an OEM size. This would be like a DJ148 = OEM160

 

Bigsaint, BamaBrute,

Dyno jet tells everyone to use a stage one kit they sell for me at least over 110 CDN. the largest diameter jet is still smaller than a 138 jet that came with the quad. I have very small drill bits that are in the 0.10 mm size the size what I can put in the OEM jets will not fit in the Dyno jet they are 4 sizes down. The only good thing about the Dyno jet kit is the needle the profile on the point works well for top end but starves the motor of fuel on initial take off. I use a combination of stock and Dyno like a 2 step shape, an abrupt angle as in the OEM needle and a steep angle for the top half as in the Dyno Jet needle. This produces a faster take off with a leaner top end which produces more top end speed. Not only are OEM jets better all around but they are a fraction of the price of DJ jets I paid $4 a piece OEM jets a far cry from $110 for 8 or 10 jets can't remember. If we had identical quads one with OEM jets and the other with DJ's my money is on the OEM side.

I am not sure how DJ measures their sizes, how they compare. Just from dyno results the DJ's don't produce the numbers as well as the OEM jets. Just my observation.