Thread: 8 Stack Hilborn-Style EFI
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05-16-2012 11:26 AM #4
So as I scan the Force EFI site it appears that this is a fully programmable unit, and that it does not "self learn", is that right? If so, I notice that they have an option for an Innovate wide band O2 programming aid. I would strongly recommend that you have access to a wide band display, and ideally one with data logging capabilities to help you understand your F/A ratio across the load range. It's very difficult to tune with a narrow band, which is basically a "switch" with a dead band from about 13.7 to 14.7. You're also going to need to understand whatever "correction curves" that unit employs, mostly modifying the base program vs coolant temperature - things like your crank fuel, cold ambient (choke), and spark to help "tame the beast". I'm not at all familiar with how the Accel/DFI Calmap program presents data, but the key is to look at every table, understand how they inter-relate with one another and with the base fuel and spark maps, and then work on one thing at a time. If you ever start tweaking two or more things at one time, thinking you've got it all figured out and can't be fooled you're going to be heading down a very bad path. Ask me how I know....
If the Accel/DFI unit is "self learn" then disregard everything I've said, set your base timing and have fun driving while it learns.Roger
Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.





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time for a new forum to visit. when they sold sr.com it went down hill fast. no more forum just a cheap site selling junkie cars. the canadians killed hr.com. mods are real pricks. as with any site...
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