I'm deciding between a few projects to tackle once I'm done with the very late-in-coming [Vane AFM to Hot Wire MAF] swap. They are:

1. Digital rotary compression tester: An LCD displays the three pressures, in PSI, for each rotor face.
2. PWM speed control for electric fans: Along with temperature sensors, this is a way to make an electric fan act like the stock clutch fan, where it's not just on and off, but also anywhere in between. Sometimes the cooling system doesn't need full power!
3. The aux port actuation aspect of the [Electronic Aux and VDI Actuation] project. Though the VDI portion is successful, I'd like an alternative to the air pump for the aux ports.

I'm curious what would be useful for people. Each is useful to me in its own way!