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Getting at the new ECU connector. Takes some thought to figure out how to use the provided wiring harness connector: Have to take the back off, the side that the wires go through, then feed the wire through, add pin connector and insert in the connector. Wire size greater than 18 gauge...

Have the bike on the bike stand, like not having to work on the garage floor. The new Speeduino ECU clone arrived, do believe I mentioned this, a Spark Gap X4 from openlogicefi. Chose this unit instead of the WMTronics Oscelot purely from a budget perspective, both good aftermarket Speeduino...

Road trial yesterday went well. Adjusted several VE table cells to bring engine operation into line with the 14.7 air-fuel mixture. Hear the exhaust "burble" every now and then, looking into this. I have read that some OEMs have calibrated the engine tune in and around the cruising range so...

Reviewing the logs last evening and noticed that the timing during fast idle is approximately 32 degrees BTDC, and when at normal engine operating temperature, 19 degrees BTDC as set in th spark table. Idle timing is "giving the engine" what it needs/wants, and the engine idles at approximately...

Good road trial day. Calibrating the VE table before the road trial is working well. Lot less exhaust fuel "burbles" each time. A "Burble" is from unburnt gas burning off in the exhaust. The engine coolant temperature is behaving closer to what it was before this project. Want to get the...

Continuing with road trials. Not using TS to automatically adjust the VE table while riding. Doing manually, take data log, review, make changes I want, new road trial. Used to get upwards of 45 to 50 IMPG on the highway, approximately 40 IMPG city/hwy. This would indicate to me that Honda...

I have been pondering the use of a single carb conversion (SCC) for the older GWs, and would like to discuss this issue as it relates to EFI ignition only. This post is for discussion, to think about why this modification is done and how it relates to an EFI ignition only installation. I have...

More road trial/tuning done. Let the tuning software - Tuner Studio (TS), adjust the VE (fuel) table to bring it more into line. Did three road trials for this. Have stopped letting the software decide the changes, instead I review the data log(s) and make changes I think are sensible. I do...

First post, probably not the last. Speeduino Project PCB (printed circuit board) design is an interesting topic. I have been following various Speeduino clone PCB development(s), and to do this work is above my pay grade at this time. Those who go down this road are doing a fantastic job of...

Going to start a new thread regarding the Speeduino ECU interface PCBs. This is the thread web site: https://classicgoldwings.com/threads/speeduino-ecu-pcbs.15594/ Cheers

This thread is part of my ongoing infatuation with the EFI world and the use of the Speeduino Project ECU. It is an interesting topic for me, and I hope for others. I find it beneficial to understand what has gone into the design of specific components, and how these components are used and...

A quick and dirty follow on post. Thinking I've covered most, if not all, aspects of an EFI aftermarket ignition control system to provide a reader with some food for thought. What is remaining is the design and installation. Most Speeduino and Speeduino clone ECUs have the same basic...

Having discussed ignition timing in good detail, next item up for discussion is the battery. I can mention from experience that once a battery fails, a fuel injected motorcycle will not operate, no bump starts as well. You may get lucky with a bump start, but generally the bike is dead on the...

Well shit (tribute to Dusterdude’s eloquent vocabulary) – it’s philosophy time. It’s like being in school during your teen years and studying history, why, because the curriculum made you. Never liked history in school, but find it fascinating today. The missing link IMO was context, you had no...

These posts are my understanding of a topic. The information is out there for you to research if so inclined. I'm not asking, nor do I expect everyone to agree with me. On with part two. Ignition timing is as expected, an integral part of the equation. You want sufficient ignition timing to...

Well shit - back at it again. Have had the GW out for trials, ECU engine tune coming together. Was queried in a different thread about ignition timing. For the 1000/1100 rather straight forward - a distributor system, for the 1200 GWs an electronic ignition timing with an ignition control...

Good afternoon - ignition timing is the holy grail from what I have read for tweaking the last bits out of the engine tune. Are you dealing with EFI or carbs? No dyno around here, road trials and seat of the pants tuning. I have mentioned this before, Honda did a good job of calibrating...

Second road trial letting the tuning software, Tuner Studio adjust/calibrate the VE (fuel) table using Tune Analyze Live. I have mentioned that the GW engine(s) have a very small MAP operating window, approximately between 55 and 85 kPa. Riding and trying to see what is happening, then...

Interesting encounter yesterday while I was out on the GW. Stopped at a traffic light beside a Victoria transit bus. Driver opened his window, a younger fellow, and we chatted real quick about my bike, he complemented me on the look. He mentioned he would like to get an 1100/1200 GW and...

Got a fresh engine tune installed, had an issue with the older ones - maybe too many changes over time. Out for a road trial this afternoon. Used Tuner Studio "Tune Analyze Live" and let it update the controller as the ride progressed. Did this because there is a very small MAP window that is...