Tuning Programmable ECU

[Kenho21]

After finally becoming mildly competent at best with 2T's, I've decided to start messing with the 125 Zuma 4T EFI AC scoot that I have.

I've got a good mix of pretty and fast parts on the way for it, one of them being an ECU. It's the Hoedar ECU (https://www.rcscooters.com/product-page/hoedar-electronic-fuel-control).

The guy selling it to me said that I get one free remote (he live's in Hawaii) tune and then each one time I need him to remote in a retune my ECU was another $150 or some crazy sh*t like that. I never even get access to the ECU software for the $500 ECU I bought... No f*cking way, my friends.

He gets everything he gets from Taiwan and I think relies on the language and shipping barriers to keep Americans from getting to his sources of things. I have quite a few Taiwanese friends. Pretty quickly I had the software downloaded and then just needed the password. I messaged him for the password and he gave it to me without any questions and then I bought the ECU from him. Or maybe I had already bought the ECU, can't remember. This was over a month ago now.

Sorry, just felt like typing stuff this morning. Most of that is arbitrary info haha.

Anyways, this software is very expansive and allows me to tune almost everything. Way more than I understand about it. I'm planning on having it dynoed eventually, but want to learn the software too. Does anyone have any resources or experience with this stuff that can point me in a direction?

[Zino]

kenho
this all i can help with is guys that posted on zuma forums

this guy tuned to 70 mph
zumamike
www.youtube.com/watch?v=2XsyKzUNIVk

smellybumlove supplied parts from taiwan and gave building tips
www.youtube.com/user/smellybumlove/videos

tilt2play built his 125
www.youtube.com/watch?v=5o0v58xfSZc

[Kenho21]

Apr 19, 2021 8:39:53 GMT -5 Zino said:

kenho
this all i can help with is guys that posted on zuma forums

this guy tuned to 70 mph
zumamike
www.youtube.com/watch?v=2XsyKzUNIVk

smellybumlove supplied parts from taiwan and gave building tips
www.youtube.com/user/smellybumlove/videos

tilt2play built his 125
www.youtube.com/watch?v=5o0v58xfSZc

Much appreciated, Zino!

[90GTVert]

If you just want to get an understanding about what you're doing, not specific software, I've read Engine Management Advanced Tuning by Greg Banish and think that's a good read. I see that there's also a motorcycle specific engine management book, How To Tune And Modify Motorcycle Engine Management Systems. Probably not the advice you're looking for, but if you want to tune I think it's a good idea.

[Kenho21]

Apr 20, 2021 22:46:46 GMT -5 90GTVert said:

If you just want to get an understanding about what you're doing, not specific software, I've read Engine Management Advanced Tuning by Greg Banish and think that's a good read. I see that there's also a motorcycle specific engine management book, How To Tune And Modify Motorcycle Engine Management Systems. Probably not the advice you're looking for, but if you want to tune I think it's a good idea.

That's good enough for me. I'm easy to please. I figured there were some good books or resources out there, but hadn't done a ton of digging yet. Just a couple Google searches. You've at least confirmed what I was beginning to suspect...no easy way to figure this one out...may actually have to open a book.

[90GTVert]

If you want easy, most would look for a Power Commander or something where it's all downloading maps or pushing a few buttons. When you get into ECUs, it can be really complicated. The good news is that it sounds like it's basically setup and ready to run to some degree when you get it. If you get more universal stuff without tunes to d/l or basic help for your bike, you can end up lost trying to figure out sensor configurations and ignition properties and fuel injector info and so on.

[ThaiGyro]

You asked the right question...and the answer as Brent suggests is not that easy. My advise is to learn as much about engine management, but do so in a systematic manner: My brain does better by breaking the elements down. Not sure the order always matters, because you be recycling and double checking before the light bulb in your brain gets lit well.

* Learn how your software/firmware package works. The interface often is clunky making little things easy to forget.
*Learn the management elements well, but as individuals. Ignition systems...injector systems...analog and digital I/O. Easy concepts, but easy to get confused when troubleshooting.
* Data logging
*Oxygen sensor control
*Keep it simple


I have been doing some research with HalTech recently, for a Suzuki project, that might be similar to yours. (Except it's a car). It is old OBDI bus control from 1994, so has EFI, but still uses and old CDI wired/mechanical distributor. No data logging. I am looking at a controller than can do COP, (coil-on-plug) plus take over the EFI functions with wide band 02 sensor input. Effectively, replacing the entire harness...and possibly the gauge cluster, out of necessity. (The OEM ECU mixes some functions, or does them at different voltages. (This part can be hard)

The point is: Study the many, many videos that HalTerch and others have on YouTube. You can see by their breakdown, just what things you need to learn and possibly do not even want. What is over engineered...what is simple control.