[njking25]

Hi Guys, started this project and I realized I've hit a wall I need some help to overcome it.

I have a turbo fz07 project im trying to convert to speeduino. The bike has a vr crankshaft position sensor, and no camshaft position sensor. I'm using a speeduino no2c with a vr regulator. The engine is Yamahas CP2. Its a 270 degree crossplane crank with odd firing order. I'm trying to get it to crank but i've noticed some weird issues. Both injectors and ignition channels work in tuner studios test mode, but dont work when im cranking. See this image for ignition timing.





Basically as I understand it Cyl1 fires, then 270 later cylinder 2 fires, then 450 degrees later cylinder 1 fires again on the power stroke. That's not what im getting with the no2c.

1) The fuel injectors are not firing during cranking

2) During cranking only IGN1 works light up.
2a) I can get IGN2 to light up if I add 360 degrees to the ATDC angle i have in odd fire channel 2. Ie no channel 2 firing at 270 degrees, but i do get channel 2 firing at 450 degrees(720-270) and at 630 degrees(360+270) but I feel these settings are not correct.

Honestly, i realized I'm kinda out of my depth here and need some guidance on how to get this thing running. I've included my tune and a log file from cranking as well. Anyhelp would be greatly appreciated.

[LPG2CV]

Hi and welcome

You have a lot of fuel settings set to zero.

First off, did you download a base tune, or did you you just start editing values in TunerStudio?

As a generalisation, any fuel corrections you have set to zero, should be set to 100%. Fuel corrections are applied by multiplying the fuel by the correction amount as a percentage. ie 110% adds 10%. 90% reduces by 10%. If you have a correction set at 0%, you now have your fuel multiplied by zero. This will always return zero.

Best approach may be to download the base tune again, and then set your Engine Constants, and go from there.

That should give you fuel leds

If you do that, and repost the tune, then someone can look into the Odd Fire situation.

[PSIG]

The firing issue and the odd-cylinder timing are two different things. Follow LPG2CV to get setting correct from a base tune.

For odd-cylinder timing, the first thing to remember is that the timing is based on when Cyl1 fires. The degrees you enter into the odd-firing Cyl2 entry is the degrees after Cyl1 fires.

Looking at the 270° crank image and the animation you posted, and designating the left cylinder as Cyl1; note the number of degrees the crank rotates after Cyl1 fires. This appears to be 450°.

If the right cylinder is Cyl1, then it appears the left Cyl2 fires 270° after Cyl1.

The entry for odd-fire Cyl2 depends on which cylinder fires first (and is the one with timing mark for TDC). It also depends on if the crank is positioned as in the animation, or reversed.

If not sure, you can verify which cylinder is which, by removing the spark plugs and using dowels in each bore to indicate crank position and timing relative to marked TDC (firing Cyl1). Enter the appropriate degrees. I hope that makes sense.

[njking25]

Hi and welcome

You have a lot of fuel settings set to zero.

First off, did you download a base tune, or did you you just start editing values in TunerStudio?

As a generalisation, any fuel corrections you have set to zero, should be set to 100%. Fuel corrections are applied by multiplying the fuel by the correction amount as a percentage. ie 110% adds 10%. 90% reduces by 10%. If you have a correction set at 0%, you now have your fuel multiplied by zero. This will always return zero.

Best approach may be to download the base tune again, and then set your Engine Constants, and go from there.

That should give you fuel leds

If you do that, and repost the tune, then someone can look into the Odd Fire situation.

Thanks bro, I used the speeduino base tune and this got my injector LEDS working.

[njking25]

The firing issue and the odd-cylinder timing are two different things. Follow LPG2CV to get setting correct from a base tune.

For odd-cylinder timing, the first thing to remember is that the timing is based on when Cyl1 fires. The degrees you enter into the odd-firing Cyl2 entry is the degrees after Cyl1 fires.

Looking at the 270° crank image and the animation you posted, and designating the left cylinder as Cyl1; note the number of degrees the crank rotates after Cyl1 fires. This appears to be 450°.

If the right cylinder is Cyl1, then it appears the left Cyl2 fires 270° after Cyl1.

The entry for odd-fire Cyl2 depends on which cylinder fires first (and is the one with timing mark for TDC). It also depends on if the crank is positioned as in the animation, or reversed.

If not sure, you can verify which cylinder is which, by removing the spark plugs and using dowels in each bore to indicate crank position and timing relative to marked TDC (firing Cyl1). Enter the appropriate degrees. I hope that makes sense.

The right cylinder should be cylinder 1, per the fz07 manual , please see the attached reference image.



I set the ATDC angle to 450 degrees and after spraying some starter fluid it seemed as if it was about to start. It gave me a few seconds of sputtering before it died. I consider this progress as I haven't even gotten that in the past two weeks of blinding pushing buttons. Thanks to both you and LGP2CV.

When I set it to 270 degrees I don't even get the beginning of a start. It just cranks. I've attached my new tooth log and tune file. My current trigger angle is -70 degrees.

[jonbill]

A data log would be helpful too. The forum won't let you upload .mlg extension, so zip all the files together and upload that.

[jonbill]

Looking at that tooth log, I see 21 short teeth and one triple length long tooth; is it 24-3?

Edit: what Vr conditioner are you using?

[njking25]

Looking at that tooth log, I see 21 short teeth and one triple length long tooth; is it 24-3?

Edit: what Vr conditioner are you using?

This is the vr conditioner im using. I chose 24-2 trigger settings on a rough guess. It might be 30-2 i have to take the left side crank case cover off and verify. I wont be able to get a log until this weekend.

https://wtmtronics.com/product/dsc-dual ... tioner-vr/

[njking25]

I counted the teeth on the flywheel of the fz07 and can confirm the tooth count is 24-2. Do you know why one tooth might be 3x longer?

[LPG2CV]

It could be the polartity of the VR sensor wiring. Have a read here, and the other links to understand it more. Once you have this correct, then it will either no longer be an issue, or you can persue other fixes. But this base setting needs to be correct before continuing.

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