DIYEFI.org Forum

I didn't explain that well at all then. It was a way to accurately represent the event angle to keep timing consistent across rpm changes across cycles and within. That is exactly in line with the end-goal. It also allowed me to calculate the final event times with 0 floating point and 0 division op...

I can agree with that, I looked at a 4 degree swing worse case was pretty small relative to the 100 degree swings in the acceleration enrichment table. So I have played with this a whole lot more and the trade-off is between isr vs main loop. I ported all the efi code I was playing with so far which...

Fred, thanks for the call and answering many of my questions. I really like what russecu did using the arm processor. I see some parallels since I was looking at that board today and have quite a bit of the oem eec simulated with a java program. I am dumping my dictionary and tables to a lowly uno w...

Cool project, I was just looking at those stm32 discovery boards today, I think I will order one to play with.

I have been climbing a very steep learning curve since my original post a week ago. Thanks for the detailed response Fred. One thing I have on my side is that this is/was a very popular engine for performance upgrades and there is extensive information available about how the existing system works. ...

Hello, I have read quite a few threads here both recently and over the last few months. I am transplanting a newer efi engine (1990) into a vintage (1965) mustang. This is a pretty common transplant for vintage mustangs and broncos. Despite the new efi upgrade, the technology is still 25 years old. ...