What modern EFI is everybody using, Modern EFI applications on Type-IV engine Options

[TheWeatherMan]

What modern EFI systems is everyone installing on their Type-IV engine?

[ottox914]

SDS. See my sig below for the install thread. It has been on 4 different engines, one turbo'd, and has been perfect. Easy to install and tune, rock solid, no failures. You have to want to do it and have an interest to make it all work. If you expect to open a box, mount a thing, plug in a wire, and live happily ever after, well, none of the systems discussed are for you. I quite enjoyed the puzzle and thought process of where to lay out the harness, how long to make stuff, where to mount this and that and the other thing. The tuning is, to me at least, pretty intuitive. I did mine when MS was just a baby and getting started. I wanted to go with a known system.

I have a friend with MS PnP on a 240hp turbo miata. He is an instructor for automotive technology. Smart guy when it comes to cars. His MS works great. But. Even with the wealth of knowledge of MS and miatas in that community, there were so many tables and settings, it took him a bit to find all the dark places in the software to get all the right boxes checked. It wasn't impossible, just took more time and patience that SDS required to be up and running. Then there was the laptop crash. And then the OS on his laptop was to old and didn't play well with the current MS OS he was trying to download and update to. So new laptop and OS. Then the his existing MS tuning files were in an older format that didn't just transfer to the new MS OS. Conversion headaches.

To my experience, MS is a fine option, just more goofing around to get it all right. The greater options in logging are nice. SDS was right, right out of the box. And with the V5 software and laptop logging options, even better. Nice that the laptop can log and assist you with the tune, but the operation of the system is laptop independent.