re: EngineLabs LS vs Coyote

Yea that's different. It's basically just a solenoid actuated valve. Tough to do on a car because it takes plenty of electrical power.

We've been having solenoid driven injectors on diesels and that alone is difficult to manage because of the power requirements. The valves work the same way (you're just pushing a valve stem instead of pulling a poppet), but it takes even more power than the injector drivers because of the forces involved and the amount of valves. It requires really big ECMs and lots of electricity.