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Just a thought, welder for DIY garage little projects. Lots out there at reasonable prices. Have been looking, did arc welding and acetylene in my youth. Father was a master with a torch and clothes hanger, and brazing. Looked at a 3 in 1 flux core welder/stick welder/lift rig 200A with...

Been a while since the last post. Have had the engine operating with sequential fuel and ignition. Installed 6 ohm resistors, one per injector. Had comments on the size of the resistors. Did some numbers and the injector circuit voltages are less than with the OEM setup using one three ohm...

Interesting couple of days. Rescued and let go a hummingbird that couldn't get out of the garage. Insulated the garage ceiling with two layers ion R-12 pink insulation. Made a misstep and fell through the ceiling, don't know how many ceilings I've been in and never had this happen - all's...

Short day today. Constructed the baro circuit board. Had to remove the resistor I had previously installed: Had to ask the oracle (internet) why capacitors are used between signal/power and ground - got my answer. First go at a circuit board since the '80s. Did a short trial today. Reduced...

Installed the COP units, made one of the COP units into a #1 cylinder timing COP. Needed to extend the plug wire to use the timing light on. Checked timing and no change. Operating in sequential mode as are the injectors. Forgot to take off the fixed timing, engine did not like. Started...

Finished wiring the COP units for my ECU project. Checked timing and started engine, runs quite well. Fuel and ignition now operating in sequential mode.

Coil-on plug units have arrived. I have been fitting 4 of these to determine best mod fit. These COP units could be used in a coil near plug install. Have had to cut off the bolt holder: Have taken these units apart and find these are not as imposing as thought, coil, spring and a rubber...

COP units and pigtails have been delivered. The in-line spark tester as well. Have the engine idling fairly well, engine stumble is being addressed. Fuel is sequential so this mod will finalize the install. Did some reading and socrace used some plug wire to go between the COP and OEM...

You have a 1200. Right side coil is for cylinders 1 and 2, left side coil is for cylinders 3 and 4. Engine won't like swapping ignition wires between 2 and 4 cylinder. I would check the coils for primary and secondary resistance. If resistance is good, can try swapping ignition wires, but...

Ordered the COP units, the connecting pigtails and an in-line spark tester. Should be here Wednesday/Thursday. The in-line spark tester is so I can check the timing before starting after I figure how to install the COPs. Probably putting the cart before the horse as I haven't done a lot of...

On the lighter side:

Probably getting ahead of myself, but as mentioned considering sequential ignition to complement the sequential fuel injection. Doing this up front. The Speeduino can accommodate 4 ignition circuits. This was done on an 1100 EFI conversion by socrace over on the NGW forum. He used a...

Thanks - I have installed an 1800 rad fan in place of the 1200. Was hoping it is less of a power pig.

Soldered the wiring for the Speeduino to interface connector between the OEM harness and Speeduino. Interesting how the wires for the 40 pin IDC connector are so small, but the wiring harness has much larger wires, but it works. This change appears to help in smoothing out the engine idle...

Interesting day for the Speeduino. Can't get the bike out of the garage so implemented a sequential fuel injection install. Temporary wiring, and using Speeduino pins 1,2,3,5. In the Engine Constraints, kept 4 squirts per cycle and alternating. Injector layout is Sequential, Injector pairing is...

Joe - good mod(s). Update to my sequential fuel injection (SFI) post. SFI injection tuning is to try to inject fuel just before or as the intake valve opens on the intake stroke. Will have to read more on the SFI fuel trim; however, there is another table in TS that is applicable to SFI and...

Sequential Fuel Injection (SFI) - secondary rotational input required. This is generally the cam shaft rotation keeping the crank rotation as primary. Have mentioned that the second rotational input is for sequential fuel injection, coil on plug (COP) application, and for better engine cycle...

Have ordered one of those TPS Hall sensors.

TPS is the OEM TPS. Have found some on the web that could work besides the go to TPS from an early model Honda Civic/Prelude: Checked the rotation of the throttle assembly yesterday and it has a rotation of approximately 90 degrees. The sensors in the picture can be anywhere from 90 degrees...

Pidjones: Have the bike back together and looked at the composite log for the cam and crank signals. Pleased with the results, and no sync losses: Don't think it can get any cleaner. Top being cam signal, bottom being crank signal. Feel like I'm back where I started about a year ago. Only...