Ender 5 plus direct drive stepper set

I heve installed new BIQU h2 direct etruder on my stock ender 5 plus but have problem with extrusion because steepper motor are different from original normal extruder motor. Any help to set dd motor stepper? thanks

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You really better off asking on a Creality forum.

You're issue probably that the gearing means you need more steps per mm (Marlin) or a decrease in Rotation Distance (Reprap/Klipper) on the Extruder motor to get the correct amount of plastic.