You did it!It's fixed!!!!WoHoooo...no more worries.Enjoy Bro!

ninjamaster's ECU Update:

Thanks, ninja, appreciate it. This was short (((butt))) interesting.

Today, I made a semi-long loop, but would not attempt to use any freeway. I have felt that cutout at speed. Very scary. Only if traffic is present, meaning. I could find N, keep coasting, key off, restart the bike kind of how lightly traveled that loop is; packing ninja's ECU down the wires. Anyway...

Now that I found this thread to reread ninja's complaint, I wanted to make sure to duplicate the same thing. OK, I see the speed and the rpm I have to match. I must remember I have two different parts in the bike. Now, I still have to swap the throttle bodies and today's mismatch was just that.

I had this terrible stumble at your rpm range, ninja. This was at low mph though. And too, this has the '08 size injectors. Now, I know this is the slower throttle opening and it's not as bad as I remember. Once I stick the matching fuel metering it was designed for, I can again, take your ECU, slow the rpm to the 3,800 rpm range. I want to see if that same rpm stumble is still there?

Yes, I could see that lean 'stumble' at the A/F meter. Much leaner being we know the '06 has that belly line at the beginning of the dyno run. Other than that lean spot, it runs like junk. Got a call, then had to run to some other place. Before that freeway pace, I had to swap ECU's and high tail it onto the freeway.

Of course the difference was obvious. The stumble was gone from the bottom. It brought the bike alive again. I have yet to film the difference between sub speeds. Stupid things like that, the A/F difference, all which go nowhere. It's just for the hobby of it. Once I collect that and other data, I'll send it back. I'm crossing my fingers, once I have the right setup, I'll ride the '06 configuration sometime next week.

Would it cutout on you every time out or just sometimes on you, ninja? I want to say the ECU is fine? I'm assuming, remember.

If you say you could fell something stumble around our, (((2,800-3,800 rpm))) window; It's just a 1,000 rpm difference. Then the injector swap will make no difference. I couldn't run through that mismatched stumble all the time today, besides the slower lag. I had to abort the run for now. Was that what you were feeling before the bike shut off, ninjamaster?

EDIT: Stumble Clarification = Stumble as in; it does feel electrical in stumble, and then it feels fuel to air in a stumble kind of way. The mix is a signal lost then comes back and I mean quickly it comes back. So, if we agree on this stumble/mis-fire-refire-fuel/air fumble-stumble; this is as best as I can describe what was happening today at that low rpm range. OK, how close did I get?

* Last updated by: Hub on 6/2/2010 @ 6:09 PM *

Sounds about right.I've had no problems with the other one I put in so far.

Thanks for the reply, ninja. Then we agree it is junk? I don't want to think that, but if that is what a bad ECU feels like, it sure has it at a few places.

Here is more input so we can make sure this thing is happening from the key fob on. I don't think we can feel the others or maybe it is hidden on the way up the rpm scale? Maybe it goes away on another map? See, we know the cold start has the rich map, the sub's arm opens the main plate and we are ready to hit the starter.

I suited up, hit the starter and took off slow as usual. From that moment, that thing would, "buck and cut." Again, I am trying to understand we have a bad ECU from the get go. The previous question was asked as, 'a hot running bike,' the stumble was present on the lower rpm range all the time, if I were paying attention to the bike and not about traffic.

Here is the cold start question: In the morning, can you feel the difference between both ECU's on the morning idle, you take off with still a warming engine out of the driveway, you feel a smoother take off now than before. Are we in agreement?

On a side note; I'm used to so many different injector swaps, flies in and flies out but none gave me that fuel type, cold 'stumble-bucking' take off or the hot drive up to 4,000 rpm. Do you see what I mean by some sort of tone out of step? If we agree, then you had a good instinct/premonition to call the ECU next.

When I was reading the manual and causes and solutions,everything kept going back to the ECU.Never had a problem with cold running or starting,just cruising speed.And if it just died all I had to do was turn the key off and it was back to normal.Who knows!!!

Cool! Thanks for the input, ninja. But see, I now have the ZX-10's injectors loaded into the '06 throttle bodies.

Here are at least 3 R&D stages or steps I'm in the middle of. I also borrowed a 2010 ECU. That's another story. Butt anyway, I'm here with a few black boxes to swap along with the injectors.

Eventually, your ECU should cut out using the 10's or the original 14 injectors is my guess. I'll let you know before the month is up how she plays out.

Always thanks, ninjamaster.