Posted by k6zrx on April 07, 2013 at 20:21:12 from (67.116.241.150):
In Reply to: MH44 EFI O2 sensor posted by David G on April 07, 2013 at 19:18:59:
David,
From your other posts, it looks like you might be using Megasquirt? If so, I have played around with that system a bit on a Ford 5.0 in a friends truck. The rig has logged several thousand miles on the system without any major problems. We have some fine tuning to do yet, especially on start and idle.
We are also running narrowband sensors, one on each bank. The problem is they only tell rich or lean, not how rich or how lean. To get a really good tune, it is better to use wideband. You can setup a table with AFR and manifold pressure. This way you can get a "cruise" setting that is slightly lean for fuel savings, and also have it richen up as the engine is loaded more. With narrowband, you get out of the closed loop upon hard throttle or heavy load, and you fuel table is then very critical. I currently have a wideband sensor in my "72 Dodge with a carbureted 360 for tuning. It will be coming out and going into the truck this summer to refine the tune there. From what I have read, you can get a fueling table setup with the wideband, then switch back to narrowband for normal operation since a good fuel table has been built using the wideband.
We got the truck running 3 years ago and I have not done anything with it since and am sort out of the loop with the current state of the art. We were discussing software upgrades today.
I have a conversion project in mind I want to do, a turbo, fuel injected Slant 6. have to get time and $$$.
What did you do for injectors on your machine? How did you mount them? If you posted before, I didn"t see it or don"t remember.
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