TWC M6 Gran Coupe

Four mods, one car

• M6 Gran Coupe (v0.3.1) — the vanilla-first cosmetic baseline. A gray-box drivable that proved the vehicle pipeline end to end: Unity asset bundle, entity class, physics, and a live-world drive.
• TWC M6 Gran Coupe (v1.5.0, released 15 Oct 2026; formerly WC M6 Gran Coupe) — the flagship, grown from the San Marino Blue Performance Plus chassis (v0.20.1) and done for this version. Retuned AWD chassis, engine audio recorded from the real car with a small Harmony patch so the note follows the load, speed-sensitive steering, four seats, a full lamp set (tail lamps lit as one across the lid and body, reverse and plate lamps, headlight DRL ring and projector state), a cab view from the driver’s seat with the interior measured against the creator’s own car (1.3.0), a steering wheel that turns with the driver’s hands on it (1.3.3), Alpine White paint with eleven paint kits in the pack (1.4.0), and climate control with a labeled dash and working gauges (1.5.0).
• Vanilla Red Performance Plus (v0.1.0) — the same chassis in the game’s own red.
• Native Paint System (v1.0.0, 26 Jul 2026) — ten custom Warlock paints over the game’s dye system, first as a separate pack with four extra finish-master cars. Since 1.4.0 they ship inside the TWC M6 pack as dye-slot paint kits, with the finish set by a small patch on the one car.

What was learned

The vehicle pipeline is where most of the lab’s hard lessons about proof came from. A build can pass every automated gate and still ship the wrong body if the swap writes over its own source. Reference photographs have to be measured every pass, not only when something looks off. Those lessons now sit in the Geometry Lab standard and apply to every vehicle since.

The lamps

The pack shipped with real lights that never lit: the bundle’s lamp materials carried the emission keyword but nothing drove it. Fixing it took three build cuts, each judged by the creator’s own night drive. The first lit the body-side tail lamps only, and the trunk-lid halves — a different mesh with different names — stayed dark, reading as two disconnected lamps rather than one. The second matched every lamp piece by name across the lid and body into one shared material per tier, wired the reverse and plate lamps to the reverse-throttle state, and made the headlight DRL ring and projector switch with the lights. The creator’s next drive found the fix had gone too far the other way: a glow light placed “behind” each tail lamp had been offset in the local space of a small rig-marker whose rotation did not match the car’s own, so it pointed part way into the cabin and lit the rear seats red. The third cut computed the light’s position from the vehicle’s real forward direction instead, the way a similar reverse light on the TWC Roadmaster already had been, and cut its reach so it could not reach the interior. Approved on the fourth pass: “Lock it in, bro. The M6 is done.”

Publication

On the Downloads page as TWC M6 Gran Coupe v1.5.0 (15 October 2026) for V3.3, with a V2.6 file of the same version; on V3.2, 1.4.0 stays the download. 1.5.0 brings climate control for everyone in the car, every key on the dash, the console and the steering wheel labeled from photos of the creator’s car, a speedometer that reads the car’s real speed on a new mph dial and a tach that follows the engine, and steering that no longer checks the exact game build. 1.4.0 puts the paint kits in the pack: the car comes in Alpine White, and eleven kits go in its dye slot, the ten Warlock paints (San Marino Blue, Obsidian Black, Rose Gold, Emerald Green, Royal Purple, Satin Gray, Matte Graphite and three reds) each with its own finish, and a Vampire livery kit, deep blood red with blood-red calipers. A kit paints the body only: the black rims, the kidney grilles and the carbon roof, trim and spoiler stay black, and the release tool proves it from the built car. 1.3.3, the same day, made the steering wheel turn: the part the game turns had been an empty marker beside the wheel; the driver’s hands now hold it at 9 and 3 and turn with it. 1.3.2 changed no game file: the pack credits its creator as Taroos throughout, and its changelog lists each version once. 1.3.0 added the cab view, the same gesture as the Roadmaster’s: scroll the camera fully in while driving and you sit in the driver’s seat, looking out through the glass, no extra mod. Five interior passes followed the same night, each one cut from the creator’s notes from that seat and measured against 32 photographs of his own cabin: the overhead console rebuilt flat against three photos he took of it that night, the roof lining split off the floor carpet and lit, white paint faces inside the cabin turned black, the buttons given real legends on an atlas instead of white squares, the instrument cluster’s texture finally carried into the bundle, carbon on the dash brow, layered door cards, paneled seats, a matte cabin, and the wheel emblem replaced by a plain black disc. 1.3.1 changed no game file: it states in the pack that the engine audio is the creator’s own recording, all rights reserved, and that the CC BY license covers the body model only. 1.2.0 was the rename: mod folder TWC-M6 (delete the old BabyWarlockM6Performance folder), new mod and item name. Entity ids are unchanged so a car already placed in a save carries over; bundles, all three runtime patches and every vehicle config are byte-identical to 1.1.1, which itself changed no game file over the 1.1.0 lamp lock of 15 September. Chassis, steering and audio are unchanged since v1.0.1, released 14 September under the Warlock Commandery name, created by Taroos the Warlock, with manufacturer branding kept out of the product. The body mesh is Black Snow’s “BMW M6 [Gran Coupe]” under CC BY 4.0, quoted by its own title in the pack’s attribution as the license requires. The engine audio was recorded by the creator from his own car, which is why it sounds the way it does. The code, chassis tune, cabin and lamp runtime are this lab’s. The pack is a free fan project, not affiliated with or endorsed by any vehicle manufacturer, and says so in its README.

The first gallery rows are the paint kits in game, one per kit, taken by the creator on 29 September 2026. Below them, the release build out on TWC Procedural Interstate Network’s roads (a separate mod), then the first playable build.

Climate control

Sit in the car, driver or passenger, and the cabin holds 65 to 70 degrees: cooler on a snowy night, warmer on a desert day. Heat, cold, rain and snow don’t get in, and the air is clean: no smoke in the burnt forest, no blowing sand in the desert, no freezing air in the snow, and those meters refill while you sit. The wasteland’s fallout still gets in, but its meter runs down half as fast, and radiation does half damage. Severe storms still reach you, as the game intends. A Climate Control icon shows the cabin temperature; get out and the weather is yours again.

The dash

Every key on the dash, the center stack, the console and the steering wheel carries its own label, matched key by key to photos of the creator’s own car: the radio presets, the climate panel’s icons, the console controller keys, START ENGINE STOP and the hazard key in red. The Commandery seal sits on the steering wheel hub. The speedometer reads the car’s real speed in miles per hour, 0 to 180, and the tach follows the engine through every gear, the same revs the engine sound plays, and drops to rest when the engine is off.

Paint kits

The car comes in Alpine White. Eleven kits in the pack go in its dye slot, where the game’s own dyes go, and each is a workbench recipe of 60 paint and 2 duct tape. Take a kit out and the car is white again; the game’s own dyes still work too. The color comes from the game’s dye system and the finish from a small patch, on the body paint only: the black rims, the kidney grilles, the carbon roof, trim and spoiler, the glass and the cabin are never touched, and the release tool checks that in the built car before anything ships.

Every kit shows in the item menu like the game’s own dyes, in a world and in the prefab editor.

The numbers

Game units are meters per second, and a block is one meter, so 44.7 m/s is 44.7 blocks a second; miles per hour for reading.

Controls and requirements

• Cab view: scroll the camera fully in while driving; scroll out to leave. The speedometer and the tach work from that seat. Everything else is the game’s own vehicle controls: four seats, storage, repair, refuel, and the dye slot, where the paint kits go.
• Game build: 7 Days to Die V3.3 (tested on b18). No patch checks the game’s build: the steering patch checks the game code it changes as the game loads, and if an update changes that code it turns itself off with a log warning (stock steering, no crash). The V2.6 file’s steering still checks for V2.6 b14. On V3.2, use 1.4.0.
• The stock 0_TFP_Harmony folder that ships with the game, and EAC off (the pack contains code, like every vehicle mod with custom behavior).
• Multiplayer: every player and the server need the same folder.
• Stands alone: this is its own mod and drives the game’s own roads. The interstate in some of the screenshots is TWC Procedural Interstate Network, a separate mod of mine, its own download.
• Known limits: no LOD or damage-state meshes yet; if a game update changes the code the steering patch rewrites, the car falls back to stock steering until the pack is updated; sitting in the car counts as shelter for the burnt forest, desert and snow “take shelter” challenges.

Credits and license

• 3D body: “BMW M6 [Gran Coupe]” by Black Snow, licensed under Creative Commons Attribution 4.0 (CC BY 4.0). Changes: normalized to the real car’s dimensions; materials, cabin, runtime anchors, Unity hierarchy and game integration adapted for the TWC M6 Gran Coupe by Taroos the Warlock. The CC BY license covers the body model only.
• Engine audio: recorded by Taroos the Warlock from his own car, with his own microphone at the exhaust and in the cabin. Copyright Taroos the Warlock, all rights reserved; not licensed for extraction or reuse in any other mod, pack, game or project.
• Chassis tune, steering, lamp, cab-view, steering-wheel, paint-kit, climate-control and gauge patches, the labeled buttons, cabin work and integration: Taroos the Warlock and Baby Warlock.
• Permissions: free to use, share and include whole in modpacks with credit. Not for sale. Keep ATTRIBUTION.txt with any redistribution. Asset use: not allowed. Upload to other sites: not without permission.
• A free fan project, not affiliated with, sponsored by or endorsed by any vehicle manufacturer. No manufacturer branding on the product.