Thanks - upping the temp and slowing the feed rate as well as starting at a much closer number for the initial attempt helped quite a bit. I was able to get it much closer to true.

Hello,
I'm trying to calibrate the extruder extrusion amount. No matter what I set the E value to, I extrude about 23mm instead of 20mm when testing.
I have this line in config.g:
M92 X80.52 Y80.78 Z400.00 E329.55 ; I started at 420 and kept doing the 20/ExtrudedAmt * CurrentStep and then saving/resetting/retesting and nothing changes.

I have a Duet 2 Wifi - Firmware 2.02(RTOS).
I do not have a Zprobe, filement sensor or anything like that. This started as a super cheap Greeetech printer that I've slowly been replacing parts on.

The Extruder is a printed on from here: ww.thingiverse.com/thing:1383913
The hotends are E3D genuine .4mm

Please let me know if you need any other info or if I just missed something obvious.

Thanks,
Brandon