SDS EFI fuel and ignition maps

[Norcalrv7]

Is anybody willing to share their fuel and ignition tables they have come up with for a SDS EFI / EFII?

Possibly a few details too, such as basic engine displacement, compression, and size injectors used.

Also, what AFR targets are you shooting for for what power settings?

Caleb

[Norcalrv7]

I have found that visualizing a smooth fuel map is difficult for me when looking at numbers, so I made a spreadsheet to help. I fly the aircraft, and note the areas I would like to change, and the approximate % difference in fuel required. I then Plot the changes in the "try next" area of my spreadsheet, keeping everything nice and smooth. I reprogram the SDS controller with my new numbers, and go fly again. Here is my current map, which runs nice and rich (11:1) at high power, 12.5:1 at mid ranges, and 14:1 below 18" or so.
Just working on fuel for now, timing is next!

[rv6ejguy]

Thanks for publishing your current values.

We appreciate your feedback and are working on some ideas to output graphs directly from the data logging program.

We'll also incorporate some wrap-around limits for values at the 1/255 junction as you suggested.

[Toobuilder]

I can send you my CPI ignition map. Same compression as you, should give you a good starting point.

PM me your email and I'll send it over.

[charosenz]

I know this thread is a bit dated but none-the-less I am happy to share my spreadsheet.

This is the current "map" I am using on a Honda 1.8L 4 cyl engine. It is on a test stand and not flying. This is with stock injectors and a 1 bar MAP sensor.

This is the second SDS system I have used and I really like it a lot.

These settings are a bit rich, but that is where I want them at the point of testing that I am conducting now.

You will actually see older maps on various sheets in this workbook.

sorry I have not figured out how to post excel sheets yet so I am going to post screen shots. I had to break it down in to 3 pages...sorry.








Charlie Rosenzweig
Longview, Wash.