Yamaha YXZ 1000cc setup, RUNNING SUCCESS

[nathaninwa]

I've been tasked to help a friend install an MS3 on his Yamaha side by side. I have not seen this in person yet, but it's a 3 cylinder engine with coil on plug setup and as far as I can tell it's only running a 24-2 crank trigger, with no cam sensor

Just looking over TS stuff I get conflicts

Is there a way to run wasted spark and wasted fuel with 3 cylinders?

Or can I use the map based signal and run sequential, but it's a boosted setup so would there be a problem with sync under boost?

If we need to, I'm sure I could add a cam sensor on the valve cover and of something onto the gear itself, just seeing if this can be done without modding the engine

Thanks

After posting this, it made me think about the crank itself, maybe it's times as such that only number 1 is up when the 2 missing teeth come by

[LAV1000]

I am running a 3 cill (120 crank) semi sequential and wasted spark.
Its a MS2 setup, so it shouldn't be problem on ms3

[nathaninwa]

Thanks for posting. After I thought more about crankshaft position compared to the trigger wheel, it will be possible to run wasted spark. I just wanted to run this in my head to make sure it would all work together before diving in

[racingmini_mtl]

You can't run an engine with an odd number of cylinders (3, 5, ...) without a cam trigger.

The only way to do this without a cam trigger is to cheat and configure the settings as a 6-cylinder (or 10, or ...) but then you have to change how you connect the coils and the injectors because the firing order will be screwed. So please, if you claim that this can be done and that's what you're doing also explain all the details. I've already done that multiple times in the past and I'm getting tired of it.

Jean

[nathaninwa]

Won't it run wasted spark and wasted fuel with a 24-2 wheel? The pistons are 120* apart. I just didn't think about piston location before I posted

[LAV1000]

You can't run an engine with an odd number of cylinders (3, 5, ...) without a cam trigger.

The only way to do this without a cam trigger is to cheat and configure the settings as a 6-cylinder (or 10, or ...) but then you have to change how you connect the coils and the injectors because the firing order will be screwed. So please, if you claim that this can be done and that's what you're doing also explain all the details. I've already done that multiple times in the past and I'm getting tired of it.

Jean

Sorry, didn't want to upset you.
Check out my msq

[racingmini_mtl]

You can't run an engine with an odd number of cylinders (3, 5, ...) without a cam trigger.

The only way to do this without a cam trigger is to cheat and configure the settings as a 6-cylinder (or 10, or ...) but then you have to change how you connect the coils and the injectors because the firing order will be screwed. So please, if you claim that this can be done and that's what you're doing also explain all the details. I've already done that multiple times in the past and I'm getting tired of it.

Jean

Sorry, didn't want to upset you.
Check out my msq

Well apparently it does work with the older version of the MS2/Extra code you're using but it doesn't with the latest one and it doesn't with MS3. With those you need to cheat.

Jean

[nathaninwa]

Semi success with this project. After some trials getting the offset angle figured out and the firing order correct, we have timing spot on and it running! Since this is a 3 cylinder, I used spark and injector ABC and set it as wasted park and semi sequential using 6 cylinders. We're messing around with some sensors now but should be out tuning this a little later on today

From what the owner of the side by side says, this might be the first megasquirted Yamaha setup. There are lots of piggy back controllers and only one other company using a big named Ecu to control everything I guess like the dash and tranny stuff. We left the stock Ecu in to handle dash canbus and tranny stuff, we just piggybacked off the crank and tps signals

[Vector973]

I'm microsquirting a yamaha vector triple thats supercharged and I'd like to pick your brain if your willing. Let me know how I can contact you. Thank you in advance

[Streettuner]

Is there anyway I can purchase a copy of your map so I have some where to start I am looking at doing the same swap. I had one question what is the max boost you are running what can the ecu actually go up to?