How completcated does Efi HAVE to be?

[Ade + Lamb Chop]

At 05:00 06/10/99 -0400, you wrote:
>>I am into minis, something a lot of americans probably won't have even
>>heard of never mind seen! Up until recently minis had single point throttle
>>body injection. You can pick up the inlet manifold, throttle body with the
>>following sensors, The system is a MAP system. I was just wondering how few
>>sensors I need to make it work. Make my own ECU and keep it simple.
>>Calibration would be done on a dyno using a lap top. No need for a Heated
>>o2 sensor, don't need it to learn really.
>
>I vaguely think that you only need a throttle position sensor and a map
sensor
>to do a reasonable job of EFI. However, you WILL need the crankshaft position
>sensor, which means you need the flywheel, transfer case and the actual
>sensor.

Surely it doesn't have to be *that* accurate? Why not use the coil? 2 per
Rev should be enough, you only need speed not accurate position?

Ade