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Old 07-03-2012, 09:06 PM   #87
roger 04 rt OP
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Joined: Nov 2011
Location: Massachusetts
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Originally Posted by Japanviking View Post
Thank you for sharing all this great information. I am thinking about setting up a dual channel version of this on my KTM. Your findings confirms a lot of my theories about how the modern FI systems work.
These facts also puts many of accepted conclusion to the test. I have never been a believer in disabling the stock O2 sensors and running PCIII units etc..
My KTM has a Keihin ECU but I am convinced that the same logics of operation applies.

Espeacially nice that you confirmed the adjustments made in closed loop carried over to the open loop operation.
Thanks. It took many test rides to confirm much of what's here. It now seems obvious that an ecu designer would want the benefit of having the ecu learn from closed loop operation. One thing that I have not had the time to figure out is the granularity of these learned adaptations. However, I would assume that even, maybe especially, at WOT a designer would want to correct for fuel quality, fuel pressure and fuel injector tolerance.

Here is some other info:
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