Project Electronic Fuel Injection

[baddi]

Not really anything to do with the injection, but with the rest of the bike:
The speedometer have never been working (factory flaw, i forgot to get fixed before i tried to fix it myself), so now less than 5 hours after my paycheck went in, i bought a Stage 6 speedometer and of course i had to buy new handlebars and new front shield

It wont make it run better, but it will hopefully greatly improve the looks and with the speedometer, i will be able to see speed, rpm, engine temp, time and accelleration (time to reach some speed) and it will be awesome.
Unfortunately, i've not got enough money to buy new handles or mirrors, so it will look like some odd mixture between stock and styled for the next month. Hopefully nothing will get stolen, when i'm at work after the summer vacation is ended.

[mono]

Just a thing that crossed my mind :

You did cut off the secondary air system, did you ?

If it's still connected, the air that's sucked into your exhaust through the reed valve will definately screw up the readings of the narrowband sensor....



And another thing :

Are you using the OEM camshaft, or some high-rpm racing camshaft ?
As far as I understood, a racing camshaft can have so much valve overlap that a lot of fresh air/fuel mixture is flushed straight into the exhaust at idle, and the oxygen in that will also confuse the system...

[baddi]

Just a thing that crossed my mind :

You did cut off the secondary air system, did you ?

If it's still connected, the air that's sucked into your exhaust through the reed valve will definately screw up the readings of the narrowband sensor....



And another thing :

Are you using the OEM camshaft, or some high-rpm racing camshaft ?
As far as I understood, a racing camshaft can have so much valve overlap that a lot of fresh air/fuel mixture is flushed straight into the exhaust at idle, and the oxygen in that will also confuse the system...

Yeah, i've blocked off the SAS, as it would cause it to be false lean all the time, and since the SAS are not needed when there are no catalyst in my Leo Vince, i've blocked it but i will definately check that for a seal aswell.

I am using OEM camshaft, since compressing the springs further would stress all the components more and it would lower the power output at low rpm along with the possibility of a premature engine failure.

[zombie]

Have you done a compression test? Maybe a leaking Exh. Valve? Try compressed air in the cylinder thru the spark plug hole, and see if it is escaping thu the exh. (leak down test)
Nice goodies by the way... I LOVE new parts.

[baddi]

Have you done a compression test? Maybe a leaking Exh. Valve? Try compressed air in the cylinder thru the spark plug hole, and see if it is escaping thu the exh. (leak down test)
Nice goodies by the way... I LOVE new parts.

I have not got the equipment for that compression test, unfortunately, but i have put a finger in the exhaust hole of the cylinder head and it did not feel as when the exhaust valve is leaking. Also, there seems to be oil on the spark plug.

The new parts came today, and great disappointment.
To fit the handlebars, an adapter of some kind is needed, but these are not made for the agility. I also just learned that fitting this kind of handlebars will be illegal, unless the adapter and the handlebars are one piece (which they are not).

Also, the wires for the engine temp sensor broke closest to the sensor today (how, i do not know) and the sensor is now unfunctional. :/

These problems would all be fixable, if it wasn't because i just spend all my money for the next month on the handlebars and the speedometer.

[zombie]

It's like falling down a mountain when it starts turning on you. One after another till the interest is vanquished... Keep your chin up, and find one part/project to complete. That ALWAYS lifts my spirits, and gets me tweaked to do more.
As for the bars... You my fine sir are the only person alive that knows of that law. If you have to comply but don't want the cost/hassle... Fake a weld with some JB Weld... Paint over it, and no one will ever know

[baddi]

It's like falling down a mountain when it starts turning on you. One after another till the interest is vanquished... Keep your chin up, and find one part/project to complete. That ALWAYS lifts my spirits, and gets me tweaked to do more.
As for the bars... You my fine sir are the only person alive that knows of that law. If you have to comply but don't want the cost/hassle... Fake a weld with some JB Weld... Paint over it, and no one will ever know

For some reason, my standart speedometer started working, now 6000km after purchase, so the handlebars and the stage6 speedometer are now 2nd prirority and i wont spend anymore money on that, until the EFI works fully, and possibly that i've got the 4-valved head from a baotian.

I just discovered, that after changing oil rings and driving 2-300 km very gently with the O2 sensor in place, the spark plug is no longer black and sooted, but the rpm are still high in idle and the O2-sensor reads rich in idle. Tomorrow, i will drive to school with my computer plugged in and recording data, so i can see if the mixture is also rich while riding normally.

I now have 2 possible explainations for my issue: 1, there's no leaks, but it has a very rich mixture at idle, so it works like a choker on a carburator and gives high rpm. Or 2, The rich mixture reading may be caused by too much exhaust gas in cylinder (there are a restriction in the Leo Vince, to make sure that it wont raise power, compared to the original), which makes the engine unable to make a complete combustion and then the high idle rpm are caused by an air leak. :p

So far, i've found nothing, but now i will have the computer to record data during longer rides, and i will contact local mechanics to hear what a cylinderleak-test would cost me, since i dont want to buy a €107/$132 for a tool, that i will possibly only use once.
I will hopefully then be able to learn, if it is a mechanical or a tuning issue.

I wont remove the restriction in the exhaust if it is not neccersary to get a full combustion, since this exhaust is legal for the ag50 in Denmark as long as this restriction is in.

[streido]

What restriction are you talking about in your Leo Vince? Is this a restriction that you have put in or do Danish Leo Vinces have to have such a restriction by law?

I have never heard of anyone, including Leo Vince themselves, say that a Leo Vince exhaust is restrictive? Quite the opposite in fact. 

Why would any company make a sports exhaust and then restrict it? I dont get that Nobody would buy it and instead stay with sto k?

[zombie]

Your injection kit will have a cold start module or IAC (idle air control) that may be staying activated because of a temp sensor you are not using. Your kit should have at LEAST one temp sender. You could trick it with a resistor to ground to read the correct temp.

[LoveMyKymco]

With the 24/28 mm TB the efi is the AIC and would be ran from closed loop sensors, the MAP and the tps will determine the VE tables placement for idle. Seems the bigger one has a AIC built in. I would start this project over from ground up...

[zombie]

Map, and TPS make no sense. How would it know warm start from cold start? Are you SURE there is no temp sender input? Maybe not included but I believe it HAS to have a temp sensor.

[baddi]

From the top:
The restriction in the Leo Vince exhaust is a cone, fitted with a single weld in the start of the pipe, very close to the motor. It is placed there, since it is illegal to use exhausts, which can up the power, so the cone will restrict the emptying of the cylinder, so it wont be able to give more power than the original. On the Technical Drawing it is called reduzione internal (intern reduction).

The temp sensors are now both functional. Both the engine and the intake air temp sensors are working properly.

The rpm are very high at the start, due to the warm-up proces, but lowers itself to around 3k after a couple of minutes, and some time later, it starts to oscillate.

After riding and recording data, i can see that it reads rich all the time, unless when i quickly let go of the throttle, and it for a very short time kills the fuel. I will now remove the restriction in the exhaust, to make sure, that it can fully empty the cylinder.

[streido]

I didnt see any reducer or cone on mine but now im going to check it at the weekend to be sure.

I take it this is on all Leo Vince exhausts and not just in Denmark?

[LoveMyKymco]

Yes he has temp sensors, but the idle is controlled thru the maps sense of pressure in the intake, and by the position of the throttle relative to the ve table after warm up. Temp sensors would have shown themselves as bad through the ecus learn cycle. If its showing its rich throughout the entire rpm you have a bad table. Start turning them down. I'm guessing you tried that? Have you talk to Andy, the developer for this program? I emailed him about building him a stimulator board to sell seperately. He's very nice and willing to help, just emqil him.

[baddi]

I didnt see any reducer or cone on mine but now im going to check it at the weekend to be sure.

I take it this is on all Leo Vince exhausts and not just in Denmark?

You can see the cone in the start of the exhaust. I don't know if it is only in Denmark, but since the package hadn't been opened between Leo Vince factory and me and since the restriction is on the technical drawing, i suspect that it is world-wide.