[Diy_efi] EMS inputs/output?

alex averbuch averchoob at hotmail.com
Thu Jul 25 05:19:04 GMT 2002


Sounds like your EMS was quite complex Tony,how long did it take to design?
I'm not sure bout a couple of the things you mentioned. What do you mean by 
3D fuel/ign and 3D engine calcs? I've heard people mention 3D tuning but its 
never meant anything to me before. Is there a 3rd axis besides Fuel & Load?

If Lookup tables could be updated via a PC on the EMS you designed obviously 
you were using EEPROM to store that data. Was the EEPROM onboard the intel 
196KC or did you have to communicate with an EEPROM chip external to the uP? 
  The reason I ask this is I'm planning to use the Mitsubishi M16C uP as a 
base for my project. It's an 80pin chip and can run at up to 20MHz so if 
anything it's going to be an overkill, the only problem is it has no EEPROM 
on it. I want to use this because my tech (Manukau Institute of Technology, 
in New Zealand) already has the target boards and development software 
(using C and Assembler) for the M16C uP.



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