I have been working on fuel injecting a two stroke. It has been a very steep learning curve. Using an Alpha-N map I can make plenty of power but drivability has been an issue. The racing class rules require one to work with a non competition engine, something like a commuter or farm bike and hand build your own HP.
A tuned two stroke relies almost exclusively on the resonant action of the pipe drawing air/fuel through the motor and the resonant action and airflow is unstable at low throttle openings so something better than AN is required. Something like Speed Density that responds to changes in airflow.
But the problem with SD is that traditional four stroke methods of measure airflow like MAP or MAF do not respond well in a two stroke. For a two stroke some other method of following changes in air flow is needed. Like measuring the difference between the Max and Min crankcase pressures each cycle and representing that a pseudo MAP value.
I have purchased a complete V4 kit and hope to be able to be able to adapt it to working with my 2T EFI project.
Because most of my interest is two stroke tuning, so as not to clutter up this one with 2T theory I have started a new thread on the F4 F5 (Bucket) Racing forum where I talk about my progress developing my bike and using the Speeduino for tuining my racing 2T. As well as porting and polishing there is a lot of 2T EFI theory there too:-
https://www.kiwibiker.co.nz/forums/show ... 1131106202