Fuel Injected YZ400/426

3 replies to this topic
  • Bryan Bosch

Posted September 27, 2000 - 06:27 PM


Thought some of you might find this interesting:

This is the electronic fuel injection system for the Yamaha YZ400/426. This system includes a generator, DC power system, complete ignition system, throttle body and fuel pump. The unit features total control of the ignition and fuel system via a handlebar switch. A laptop can be used to diagnose the system and make programming changes.

  • Gary_Kessler

Posted September 28, 2000 - 07:39 AM



I have a PDF from Optimum that describes the product for the Yamaha thumper. All I can saw it NO MORE JETTING ISSUES!! And added Horsepower that is adjustable from the handlebars. This should give the Vortex ignition a serious run for it's money. AND it has an RS232 interface w/handheld ignition mapping program (I think it's only CE devices)

I have a .PDF but I can't figure out how to post it.

'00 WR, YZ modified and dodgin' Roadrunners and P-dogs!

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  • Matt_Porritt

Posted October 02, 2000 - 12:43 AM


No more jetting issues??
Cannondale have 'no more jetting issues' also on their bikes.. there is no mor jetting issues.. just mapping ones!! :)

Trust me... mapping an EFI system is about 100x harder than playing with a pilot, main and needle.

**Ride it like you Stole it!**
Matt Porritt
99 YZ400F
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  • Gary_Kessler

Posted October 02, 2000 - 06:20 AM



I agree totally about mapping EFI, I hated doing it on my racing Bimmer. . .I think a bike would be MUCH worse because of the varing conditions. BUT, like I said. No more JETTING issues. . . .just EFI issues.

'00 WR, YZ modified and dodgin' Roadrunners and P-dogs. .all with no damper!


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