MicroSquirt.com read only forum (Jan.15,2018)

Thanks, I'll try that...with skepticism. It seems like that might cause other troubles? Are there any other calculations based off the cylinder quantity?

let me display a super amount of ignorance here...alpha-n is an algorithm within megatune and not separate hardware, correct?

OK so now the optical sensor seems to be working but it is showing some really high rpms, like around 15k...my engine should top out at 8k. Along with the optical sensor I am using a disc with a slot in it that is mounted to the crankshaft. Anybody have any ideas why the rpms would read so high?

Hrrmm....alpha-n you say....

Can I get your opinion of my setup? It may be doomed for the get go.

2hp engine, throttle body with one injector mounted to side of engine. For my efi controls, I have an optical sensor mounted on crank shaft (for rpm only?), throttle position sensor mounted on ...

I am running a microsquirt efi on a small (<100cc) single cylinder 4-stroke engine. The throttle body mounts directly to the engine and the intake valve is only roughly 1 in. away. Where would I need to hook up my MAP sensor and IAT sensor? I assume it would be before the injector for both?

Thanks.

That did it! Thanks for the help Matt.

Thanks for the reply Matt.

As of now, my ignition is being controlled via stock magneto coil (standard small engine ignition) so I would only be interested in the fuel control. I have an optical sensor that seems to be working but MT will not register any RPM. I found an issue with MegaSquirt where ...

I am trying to hook up a sensor to detect engine RPM on a small (<3hp) engine. What methods are out there to make this as simple as possible to hook up to the engine and microsquirt? I have a small optical sensor but it does not work for some reason. I have seen the hall effect sensor method used ...