I've been looking at EFI options for a 427 ci stroker Windsor build so this is very interesting to me, but I'm curious really how much effort it would be to put together a working system for this vs. just buying something like a Holley Sniper EFI.
Speeduino: Open-Source Engine Management
21–30 of 58 posts
Re: Speeduino: Open-Source Engine Management
#22What is engine management? This is not a very "searchable" term.
Re: Speeduino: Open-Source Engine Management
#23What is engine management? This is not a very "searchable" term.
I answered this on a different comment: https://news.ycombinator.com/item?id=22467998
Re: Speeduino: Open-Source Engine Management
#24What is engine management? This is not a very "searchable" term.
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Re: Speeduino: Open-Source Engine Management
#25This is super cool. Much like the Raspberry Pi, I could see this as a way for non-developers to start getting interested in FOSS software/hardware hacking.
Some caution required, you can damage your engine by running too lean, for example. Might be good to just start with displaying metrics...
Re: Speeduino: Open-Source Engine Management
#26While I love that this is possible you have to be very literate in electronics for this to make sense. A lot of car guys just aren't going to rip apart their wiring harnesses and do testing to make sure it'll work with their onboard sensors. That being said I'm currently looking into this for a turbo econobox. Haven't decided whether to go this route or a standalone but I still have plenty of time to source parts.
I mean, I don't think you have to "rip apart the wiring harnesses".
Agreed. In fact, the engine bay wiring harness can probably be kept mostly or completely intact. If the stock sensors are being reused, there's no need to mess with the wiring harness at the sensor end. If the position of components in the engine bay is not significantly changing, then the routing of the wiring harness doesn't need to change either. At most, you're going to have to figure out how to connect the harness to this new computer, which can possibly be done without having to modify the stock ECU connector. I have seen adapter harnesses before.
Re: Speeduino: Open-Source Engine Management
#27While I love that this is possible you have to be very literate in electronics for this to make sense. A lot of car guys just aren't going to rip apart their wiring harnesses and do testing to make sure it'll work with their onboard sensors. That being said I'm currently looking into this for a turbo econobox. Haven't decided whether to go this route or a standalone but I still have plenty of time to source parts.
To be fair, it seems to me that most car guys are not necessarily literate in electronics. And for them, there's various aftermarket options that are a bit more plug-and-play than this. And that is fine, IMO. But for nerds like me whom are inveterate tinkerers, and familiar with both engines and electronics, there's projects like this.
Re: Speeduino: Open-Source Engine Management
#28Earlier quoted context omitted.
I'm not aware of any aftermarket EMS's using FPGAs, and there are quite a lot of them. The engine position sensing isn't something that requires a lot of specialized hardware: The sensors are usually one or two reluctors or hall effect sensors that give, say, 12 to 64 clock edges per engine rotation. Determining engine position is pretty easy with most microcontroller's built-in timers. I know that megasquirt, and fr…
> I'm not aware of any aftermarket EMS's using FPGAs, and there are quite a lot of them. Engine management has been using PLDs/FPGAs for years.. look at Autronic, Syvecs, Pectel, and a bunch of research engine management systems that are too expensive for mortals to buy. If you're building something in 2020, you'd be shortsighted to not put an FPGA between the engine position inputs, and your time-sensitive outputs.…
> If you're building something in 2020, you'd be shortsighted to not put an FPGA between the engine position inputs, and your time-sensitive outputs.
Why? Without supporting information this sounds like cargo-culting. What are the timing requirements and why can't they be achieved with current microcontrollers?
Re: Speeduino: Open-Source Engine Management
#29Earlier quoted context omitted.
I mean, I don't think you have to "rip apart the wiring harnesses".
Agreed. In fact, the engine bay wiring harness can probably be kept mostly or completely intact. If the stock sensors are being reused, there's no need to mess with the wiring harness at the sensor end. If the position of components in the engine bay is not significantly changing, then the routing of the wiring harness doesn't need to change either. At most, you're going to have to figure out how to connect the harne…
Oh OK. You are correct it seems to support most CKP and CMP designs. So most of the work is actually just getting the pin out and putting those in the speeduino board... I may have to give this a shot then. Not sure about ignition wiring but when I get some time after work I'll read up on how thats handled.
Re: Speeduino: Open-Source Engine Management
#30Is my car still insurable if I run this?
Who says they need to know?