Uploaded January 2026 | Updated September 2026, 1 week ago
Released on the Custom Shaders Patch Discord under the # project-discussion channel. CSP 0.3.0+ now allows Lua scripts to forcefully override the current gear, so I made a very simple implementation of a manual dogbox transmission, which used to be a common sight in racecars (F1, NASCAR, WRC, etc) before the prevalence of sequential and semiautomatic transmissions. Now we can drive '80s-'90s racecars more like the way they were intended to be driven!
At the moment, the script can be used with any car that can have its data.acd unpacked.
Released on the Custom Shaders Patch Discord under the # project-discussion channel. CSP 0.3.0+ now allows Lua scripts to forcefully override the current gear, so I made a very simple implementation of a manual dogbox transmission, which used to be a common sight in racecars (F1, NASCAR, WRC, etc) before the prevalence of sequential and semiautomatic transmissions. Now we can drive '80s-'90s racecars more like the way they were intended to be driven!
At the moment, the script can be used with any car that can have its data.acd unpacked.






![RPCS3 0.0.7-8871 - Gran Turismo 6 v1.16: Midfield Raceway + Deadlock/Hang
Interestingly, this version of Gran Turismo 6 has a 24FPS hang, nearly identical if not the same as MGS4s hang. (Using rajkostos hacked MGS4 build does not solve the problem and only introduces more graphical bugs)
In addition, the later versions also seem to be more susceptible to a Working buffer not big enough crash, especially when trying to play with a higher resolution.
PC Specifications:
i7-9700K 4.9Ghz
16GB DDR4-2133
GTX 980 Ti
Windows 10 1903
Gran Turismo 6 [BCUS98296] v1.16
RPCS3 0.0.7-8871
PPU LLVM
SPU LLVM
SPU Safe
TSX Enabled
Vulkan
1280x720
Write Color Buffers On
Read Depth Buffers On
Read Color Buffers On
Disable ZCull On RPCS3 0.0.7-8871 - Gran Turismo 6 v1.16: Midfield Raceway + Deadlock/Hang](https://i.ytimg.com/vi/vTqrRqUVpyo/mqdefault.jpg)



