Softer ignition curve for 2008 YZ450


11 replies to this topic
  • pobit

Posted October 19, 2008 - 07:05 PM

#1

I use my 08 YZ450 for racing enduros and I am looking for a CDI with a softer power curve. Vortex makes a programable ignition but at $500.00 it's over my
pay scale. Is there a stock Yamaha box that will plug in and give a softer curve? Thanks, Dave

  • DPW

Posted October 20, 2008 - 02:23 AM

#2

have you thought about a heavier flywheel?

LIKE THIS

  • pobit

Posted October 20, 2008 - 06:08 AM

#3

Thanks for the link. I may add a flywheel weight after the ignition but the problem I have is the advance is too quick at off idle giving the bike a hit. If the spark were retarded at off idle, it would smooth this area out and prevent wheel spin. Does anyone know if the 07 YZ450 CDI has a softer power curve at off idle? I can buy new take off's for $50.00
Thanks, Dave

  • Kasjok

Posted October 20, 2008 - 06:43 AM

#4

A heavier flywheel will do just what you need!

  • KAS

Posted October 20, 2008 - 08:38 AM

#5

The '07 ignition wouldn't make it any smoother.

What about using a WR ignition?

  • SUnruh

Posted October 20, 2008 - 10:13 AM

#6

talk with jessie at williamsmotorwerx about the msd ignition.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted October 20, 2008 - 11:13 AM

#7

What about using a WR ignition?

WR450 ignition systems are incompatible with the YZ electricals.

I believe Graves makes a programmable ignition for the YZ450. It will likely be in the same general price bracket as the other aftermarket ignitions, though.

  • JSanfilippo

Posted October 20, 2008 - 09:04 PM

#8

The '07 ignition wouldn't make it any smoother.

What about using a WR ignition?


I'm not a fan.
If I had $500 burning a hole in my pocket I'd get a vortex ignition and set it to 11 :D. With the stock WR ignition from about 10% to 100% throttle the response is great but from 1%-9% its kinda soft. I know yamaha did that for tractability reasons and I appreciate it in tighter terrain but in the open its kind of annoying.

  • KAS

Posted October 20, 2008 - 09:42 PM

#9

With the stock WR ignition from about 10% to 100% throttle the response is great but from 1%-9% its kinda soft. I know yamaha did that for tractability reasons and I appreciate it in tighter terrain but in the open its kind of annoying.


Which is exactly what the OP is wanting.

  • grayracer513

Posted October 21, 2008 - 05:20 AM

#10

Which is exactly what the OP is wanting.


Maybe, but unless you rewire the stator and the rest of the bike, the WR CDI simply won't work.

  • Thumper_Bloke

Posted October 21, 2008 - 08:51 AM

#11

How about Dynatek? I have one on my WR450 and its extremely adjustable.

Not sure if they have the 2008 YZ, you may have to call to find out.
http://www.dynaonlin...es/fs_ignition/

  • projected

Posted December 04, 2008 - 05:55 PM

#12

G2 throttle cam? I don't have one but have read many good things about it, at $100 it's worth a try.

Lot's of info here:

http://ktmtalk.com/i...howtopic=160166





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