Dyna 2000 electronic ignition on a Gpz1100?

Thanks! I'll look into it. Yes indeed I do have a Kerker 4 into 1 header pipe on it as well. So just a new pressure regulator should correct this? That would be a lot cheaper than a Dyna 2000 or 750 Turbo fuel injectors, although the Dyna 2000 has some nice features and would be a good upgrade.

The adjustable FPR will help to fill in any weak spots caused by the pipe and the big bore, in much the same way as raising the needles and putting in larger main jets will on a carbed bike. You may need to tweak the TPS (throttle position sensor) a little to get the idle right, but do the FPR first and balance the throttle bodies before touching this.

The good news is that the GPz injection system was years ahead of it's time. If you want to get really trick you can even fit a Dynojet Powercommander to get fully mappable fuelling just like a modern bike. Knowledge is power :laugh:

750 Turbo fuel injectors would be cheap, just swap me your 1100 injectors for the set of 750 Turbo injectors I have

otakar wrote:

You mentioned that it is the worst during higher end acceleration. This is idicative of a lean condition.

Otto Kudrna

I thought that was what I said but I just thought that the injection has longh been replaced with smoothbores.

Post edited by: otakar, at: 2007/10/30 16:41

I have a set of Gpz1100 injectors I can swap you with..
Also, can anyone recommend an adjustable fuel regulator that doesn't cost $150+? And while a Dynojet Powercommander would be nice, they don't make one for this bike and I'd rather spend the $300+ on the Dyna 2000.

PM sent.

You might want to check into MegaSquirt, that's what I have (although the bikes not running yet), and it costs around $150 shipped for the kit.

www.diyautotune.com/ sells kits as well as assembled ones.

The MegaSquirt forum is www.msefi.com/index.php

howard95132 wrote:

while a Dynojet Powercommander would be nice, they don't make one for this bike

They don't make one for the 750 turbo either :silly:

I decided to order the variable fuel pressure guage today. It should work and if it does, it will be well worth the $28 w/shipping. Got it at www.advancedjdmparts.com/ , SKU: AD-FPR-CF. Best deal I could find and if it gets rid of my pinging, I’ll be happy. Thanks Lorcan for the tip! :)

Post edited by: howard95132, at: 2007/11/01 21:56

dyna 2000 on gpz1100b1.

OK You all lost me. What is the advantage of the Dyna 2000 over the stock ignition with a set of hot coils, besides being able to change the advance?

That's exactly what my original question was. Since I have EFI already, while I would expect the Dyna to be 'better', since this is a street bike and not a race bike, I'm not convinced it would be worth the $400+ for the upgrade. And my $28 variable fuel regulator may just solve my pinging problem by itself. I'll find this out this week as I expect it to arrive tomorrow.

Question -- Does the Dyna 2000 allow a programable ignition advance curve at various RPMs, as opposed to the customary mechanical advancer where the idle-retard position springs quickly to full advance?

Seem to recall the Yamaha XR1100's (late 70's) introducing a vacuum advance for ignition timing, which was supposedly an improvement over the KZ's mechanical advancer, by allowing carb venturi vacuum into the ignition timing equation. (But this might be a mirage :huh:)

Edit -- the Yamaha may have been an XS1100 or an XJ1100 instead of an XR1100.

Post edited by: Patton, at: 2007/11/04 17:37