Long day, but got in a little MH44 EFI tuning.

Posted by David G on May 26, 2014 at 16:48:59 from (205.215.206.18):

I worked on the garden and other things most of the day, but got about an hour in on the MH44 tuning.

The fuel tables are a two dimensional array with RPM on the x axis and load % on the Y axis. It was idling good but stumbling real bad under load. I opened up the top end quite a bit and it runs a lot better.

I added a push button hooked to the injector, so give it a quick squirt when starting cold. There is a table that enriches the mixture while it is warming up.

I am really missing having a dyno, and am at the point of having someone ride with me and look at the readings while I use it. The tractor runs best at 12.8 AFR, 14.7 is ideal, and it starts missing if I bring it up. I am thinking about turning autotune on with a setting of 12.8, and see how it runs.

Replies:

• Re: Long day, but got in a little MH44 EFI tuning. Mark-IA 12:38:35 05/27/14 (0)
• Re: Long day, but got in a little MH44 EFI tuning. old-9 06:14:04 05/27/14 (1)
  • Re: Long day, but got in a little MH44 EFI tuning. David G 07:47:15 05/27/14 (0)
• Re: Long day, but got in a little MH44 EFI tuning. robgIN 18:36:06 05/26/14 (0)

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