yzf 426 twin ignition map


9 replies to this topic
  • gixxer7500_0

Posted May 17, 2009 - 12:39 PM

#1

Is it a myth or is it true that the wr426 ignition has a gray wire shorted down to earth to retard the ignition slightly and the yzf426 does not have the wire shorted to earth ? if this is true could i put a swtch on the bars and have 2 map setings with the gray wire for wet or dry ?

  • TIG88

Posted May 17, 2009 - 01:08 PM

#2

As far as I know that wire dosent even exist of the YZ cdi, but I could be wrong. The power differences have to do with cam timing, jetting, and exhaust/intake restriction too.

  • thumpyz

Posted May 17, 2009 - 01:51 PM

#3

i dont think it is a whole different map, just a little bit higher rev before you hit the limiter. 500 rmp's or so.

  • TIG88

Posted May 17, 2009 - 01:52 PM

#4

i dont think it is a whole different map, just a little bit higher rev before you hit the limiter. 500 rmp's or so.


It is infact a different map.

  • grayracer513

Posted May 17, 2009 - 02:33 PM

#5

It's a different map, but only on the WR. The YZ426 or 450 doesn't have it.

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  • gixxer7500_0

Posted May 18, 2009 - 12:55 AM

#6

As far as I know that wire dosent even exist of the YZ cdi, but I could be wrong. The power differences have to do with cam timing, jetting, and exhaust/intake restriction too.


It does exist i have found it on my bike it is in a plug off the cdi that has 2 conections one is black/white and linked to another black/white and the other is a single gray on its own if i knew how to upload pictures on here i would send you a pic
cheers
chris

  • gixxer7500_0

Posted May 18, 2009 - 12:57 AM

#7

It's a different map, but only on the WR. The YZ426 or 450 doesn't have it.


so if i bought a wr426 cdi it would come with 2 maps instaled and i could use either map ?

  • grayracer513

Posted May 18, 2009 - 04:37 AM

#8

so if i bought a wr426 cdi it would come with 2 maps instaled and i could use either map ?

Yes, but no one I know who has ever disconnected the gray wire from a WR has ever wanted to put it back for any reason.

  • TIG88

Posted May 18, 2009 - 11:05 AM

#9

Do you feel you have too much power, or power comes on too quickly? Is that the reason you're wondering about this?

  • FinchFan194

Posted May 18, 2009 - 12:08 PM

#10

That would be a cool mod to have for tight single track or slimy/wet conditions.





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