after market cdi boxes,yzf 450

7 replies to this topic
  • shade

Posted August 07, 2006 - 01:10 PM


has anyone experienced cdi problems? if so did you replace it with the stock or buy a aftermarket box?i have done all the checks in the manual and everthing is has to be my bike has a slight miss when you hold a steady throttle at any rpm,i have had it a few months and it has always done this.

  • Baron Von Beard

Posted August 07, 2006 - 01:26 PM


If the jetting is rich it will do this. How often are you at a steady throttle position anyway?

  • shade

Posted August 07, 2006 - 03:56 PM


Several Guys Have Told Me It May Be Rich.i Have Moved The Main Up And Down,the Needle Up And Down And The Pilot.nothing Will Take This Out.if I Leave The Tps Unhooked It Helps It A Bunch.the Tps ,coils All Check Out Ok.
I Have A Yfz450 And Have Never Had Problems With It. This Is The First Four Stroke I Have Worked I Am Sssssssstupid.these Are Not As Easy As Two Strokes..may Be The Stock Air Filter And Box May Not Be Supplying Enough Air??

  • ncmountainman

Posted August 08, 2006 - 06:17 AM


if all else fails,i have a ignition off my 05 (replaced w/vortex) that has hardly any time on it. i'll give it to ya for half its oem replacement cost :thumbsup: that is if it'll fit????

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  • Diode663

Posted August 08, 2006 - 01:40 PM


I have an oem cdi off a 04 450 you can have for 70 bucks shipped if you would like. I got the rev box and it honestly doesnt do anything for power, and I never end up needing the overrev anyway.

  • Satch0922

Posted August 08, 2006 - 06:03 PM


more intriguing than the thread is ....How Does He Make An Entire Post Where All The Words Start With Capital Letters? :thumbsup:

  • bigred455

Posted August 08, 2006 - 08:23 PM


Have you looked at the needle for wear?Or just try a new needle,same needle just new?

  • shade

Posted August 09, 2006 - 05:45 PM


the bike is was a leftover 04.i have only put about 7 tanks of fuel through it. ????????????

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