ModelSamplingContinuousEDM_motorway_edition

ModelSamplingContinuousEDM_motorway_edition is the Motorway-pack re-skin of ComfyUI's built-in ModelSamplingContinuousEDM: it swaps a model's sigma schedule to a continuous EDM-style one, but reads the model from the MOTORWAY 🚌💨 bus by key instead of over a wire.

The native node is the one you reach for when a model's default schedule fights your sampler - typically v-prediction or EDM-trained checkpoints that produce flat, over-smoothed images under a plain discrete sampler. It rewrites the model's sigmas to be continuous, so your KSampler steps are spaced along the curve the model was actually trained with. The sampling dropdown picks the family: v_prediction, edm, edm_playground_v2.5 (for Playground v2.5), or eps. sigma_max (default 120) and sigma_min (default 0.002) bound the noise range; the defaults are sane, and most people only ever touch them when a specific model card says so.

What the motorway edition changes

Generated by the pack's clone_nodes_in_the_dangerzone/nodes.py, so the interface is: MOTORWAY 🚌💨 in (required), the native widgets, and two key strings:

• INPUT_model_key (default model) - bus key holding the model to re-schedule.
• OUTPUT_MODEL_key (default MODEL) - bus key the re-scheduled model is written to.

It pulls the model out, applies the new schedule, stores the result back, and outputs only the cloned bus. You then pull the model off later (a Motorway 0x1 with key MODEL) and feed your sampler. One-for-one replacement for the native node inside a Motorway graph - same behavior, no wire from the loader.

Installing

cd ComfyUI/custom_nodes
git clone https://github.com/agilly1989/ComfyUI_agilly1989_motorway

or ComfyUI Manager → "ComfyUI_agilly1989_motorway", restart. No pip deps, no model files.

The fragility you should know about

This whole _motorway_edition family is the pack's riskiest corner. The clone generator runs at import time over every node ComfyUI has registered, and that's how it's broken startups in the wild - one 2025 report shows an unrelated RandomModelClipVae class without a CATEGORY attribute crashing the entire Motorway import. The folder name (clone_nodes_in_the_dangerzone) and the README's "most should work" caveat tell you the confidence level.

Worse, the 1.1.7 hotfix disabled the clone loader outright, so in current releases these nodes likely aren't registered - if it's missing from your menu, that's expected. If you're not building a Motorway pipeline anyway, skip this and use the native node; it's identical under the hood and far less likely to vanish on update.