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

Are you running a catalytic converter? The engine tuner I work with told me that CATS work the most efficiently when the engine is running at 14.7 A/F ratio. So if you have a cat, tune your engine for 14.7.

But how do you know what works best? Are you just supposed to use the # of injections that you can tune your idle with best? Or will you notice a power difference under wide open throttle? I guess that I am a little hesitant to start changing settings like this, and then run my engine as hard as I ...

I understand what "injections per engine cycle" means, but I was wondering how to optimize this setting with the type of engine you have. I have an inline 4 cylinder, DOHC engine. I rough tuned the engine with 2 injections per engine cycle, and alternating injector staging. My idle was fairly hard ...