Speeduino 2T EFI Project

[TZ350]

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[MDJGyurgeiz]

No. do not connect it to anything, just let it sense the outside ambient air pressure.

I am using the Speeduino V4 board with the onboard MAP sensor. I have not connected a hose to the sensor, it just reads ambient air pressure. That way it can adjust the tune for elevation and air pressure changes in the day.

Get your project started with the Alpha-N methodology first, (TPS vis RPM) then we can add a pseudo MAP sensor later for an additional VE map.



This is the fuel pump I use https://www.ecotrons.com/wp-content/...-spec-V1.0.pdf you will be able to find something similar and cheaper on AliExpress. I use a Honda (but could be anything) 3,5 bar fuel rail pressure bypass type regulator salvaged from a car wreckers.



Yes, I may be able to help. What Speeduino board are you using? For technical Speeduino problems like noise on the signal line you may have to go to the Speeduino projects forum but anything two stroke EFI tuning with your project I may be able to help.

EFI and two strokes does work, people have had great success with it.

A big must. Get the paid for full version of Tunerstudeo and their Data logging and graphing software.
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great thank you very much. I'm proceeding as you advised me. I just need to finish the wiring and then I can start starting the engine. i am using as ecu speeduino NO2c which is the smaller and more compact version of speeduino and is able to manage two injectors. I made a 12-1 flywheel, audi rs COB coil, Bosch water and air temperature sensor. tunerstudio and megalog I have already bought them so even at the software level they are fine. I started doing a tunerstudio project but I would like you to help me set it up. I attach it herektm tune 22_08_2020.zip

[TZ350]

great thank you very much. I'm proceeding as you advised me. I started doing a tunerstudio project but I would like you to help me set it up. I attach it herektm tune 22_08_2020.zip

I have not tried to open someone else's TunerStudio project before and have utterly failed with yours. Anyway get your bike wired and lets see what happens.

[MDJGyurgeiz]

I have not tried to open someone else's TunerStudio project before and have utterly failed with yours. Anyway get your bike wired and lets see what happens.

try this fileKTM EXC 125 . 2006_2020-08-23_12.06.04.zip

[TZ350]

try this fileKTM EXC 125 . 2006_2020-08-23_12.06.04.zip

Yes, I can open that one.

[MDJGyurgeiz]

Yes, I can open that one.

perfect. if you can give me a hand to make a first configuration of the project I would be grateful. so you start with a solid foundation to start with.

[TZ350]

perfect. if you can give me a hand to make a first configuration of the project I would be grateful. so you start with a solid foundation to start with.

I made a few changes, hopefully they will help you get going. You will still have to fill out the VE table. You will still have to enter the TPS and RPM break points and fill out the cell entries. Talk more when you are ready start trying to fire the bike up.

KTM EXC 125 2020-08-24.zip

[TZ350]

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[MDJGyurgeiz]

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perfect. I entered all the settings you recommended on tuner studio. you can help me also for these that I am attaching in the photo. ?

[MDJGyurgeiz]

I made a few changes, hopefully they will help you get going. You will still have to fill out the VE table. You will still have to enter the TPS and RPM break points and fill out the cell entries. Talk more when you are ready start trying to fire the bike up.

KTM EXC 125 2020-08-24.zip

can you give me a hand in these settings that I have attached above? do you know what advance I can use if I had to clone the original CDI ECU?

[TZ350]

can you give me a hand in these settings that I have attached above? do you know what advance I can use if I had to clone the original CDI ECU?

Because you have so many 255 entry's I suspect you did not load the Speeduino Base Tune first when you started your project.

Ignition, a safe place to start is 18 or 20 deg BTDC and as it gets into the higher RPM steadily retard it 4 to 8 degrees. Yes with a two stroke you retard the ignition at high RPM.

Myself I am not using the Speeduino for ignition control, I only use it for fuel injection. I have a different digital DC powered CDI ignition for lighting the fire.

My EFI settings can only be a rough guide. If you had exactly the same bike as me you could follow my settings exactly but as it is, you will have to develop your own settings that suit your bike.
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[TZ350]

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Loading the Tuning Studio Firmware Definition ini file and the Speeduino base tune.
Speeduino Manual:- https://speeduino.com/Speeduino_manual.pdf
Page 11:- Creating a new Project in TunerStudio.
Page 12:- TunerStudeo Firmware Definition File.
Page 15:- Speeduino Base Tune.


Basically.
Step 1:- go to the reference sub directory in the Speeduino folder.
Step 2:- load the Speeduino ini file. (Firmware Definition File for the Tuning Studio software).
Step 3:- Go to the Base Tunes sub folder
Step 4:- and load the Speeduino base tune.
Then you can modify Speeduino base tune to suit your project.
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By loading the Speeduino base tune all of the screens are filled out for a four stroke. Easily changed too two stroke settings and you wont overlook some obscure initial setting that might cause you a lot of grief until you discover it.
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[obelsik]

The KTM 65 SX has the power valve driven open by exhaust gas pulses into a diaphragm. Could this be used as a pseudo map sensor?

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[TZ350]

The KTM 65 SX has the power valve driven open by exhaust gas pulses into a diaphragm. Could this be used as a pseudo map sensor?

Intuitively seems like a good idea, worth trying if you have the time.

Using the Google "SITE:" search option and this threads URL you can read about other things that have been tried in the search for a useful MAP reading. Some more successful than others.

[MDJGyurgeiz]

Because you have so many 255 entry's I suspect you did not load the Speeduino Base Tune first when you started your project.

Ignition, a safe place to start is 18 or 20 deg BTDC and as it gets into the higher RPM steadily retard it 4 to 8 degrees. Yes with a two stroke you retard the ignition at high RPM.

Myself I am not using the Speeduino for ignition control, I only use it for fuel injection. I have a different digital DC powered CDI ignition for lighting the fire.

My EFI settings can only be a rough guide. If you had exactly the same bike as me you could follow my settings exactly but as it is, you will have to develop your own settings that suit your bike.
.

I made the whole configuration by putting together your advice and a first configuration that I did. can you give a final check to the project that I am attaching to you and modify or tell me what you don't like?KTM EXC 125 . 2006_2020-08-27_15.59.30.zip