Tara wrote:
Thanks for the honest critique. I knew it wasn't ideal but I'm looking for something to help smooth my idle. I'd also eventually like to go to stagged injection with an ITB/FI setup I'm working on. That will drop me down to only one injection driver and that would kill my idle. This is a way around that.
Primarily, though, this was a way for me to add CPLD/FPGA programming to my resume.
Thanks
Hello and welcome to the forum Tara
I am very happy we have another person who is into programmable logic and desire to apply it for controlling an engine (the first person is myself

but i've only recently started with that, so still very much a noob and still learning VHDL)
As Fred mentioned, this kind of operation will result in worse response to transients than a true sequential system, but i think you will still get better idle just because of the fact that you'll be opening injectors only once per engine cycle (as opposed to several times as in banked/batched systems)
If you really worry about B&G frowning at you legally, just re-implement your power supply according to some free/open design (i am sure there are better ones around). I wouldn't worry about using same mosfet as MS does - this is in no way infringing. Anyone can use any parts. The IP is 'HOW' you use them.
Alex