034 is a good system, and Javad's pulling some *seriously* big preformance numbers, but it's just too darn pricey IMO. MegaSquirt is cheap, but has too many compromises (old hardware, needs separate board for ignition etc etc). UltraMegaSquirt will be better but isn't finished yet. My pick has been VEMS (Versatile Engine Management System) a.k.a. Genboard a.k.a. AVRMega.
Good hardware base, with good software as well. Only the documentation is a little lacking, but the group is starting to focus on that now. Uses the MegaSquirt tuning tools as well.
I am sitting at my desk soldering mine up now. It's going to go on an Audi 5 cyl NA ni the first place, but ultimate aim is to slap it on an Audi turbo and drop it into my CQ or 90Q...
Cost me about $1k for board and all the bits for a 5cyl. WBO2 sensor, EGT sensor, FET drivers for fuel and spark, MAP sensor etc etc.
I have very limited electronics experience, and relatively little programming experience, but the step b step guides seem to have come far enough now for me to stand a chance.
Come on and join in. It sounds like the best system for your project at the moment, and I could really do with a fellow audifan doing an EFI project locally!
Website is
www.vems-group.orgIt is Wiki based which is kinda scary 'til you get used to it, but there are step by step guides (with pics!) and good support from the developers. There is also an email list.
Hope to hear more on your project as it develops...
Duncan