[Grishnakh]

Your aftermarket ECU won't pass emissions tests in most places that have them, so this really doesn't exist for practical purposes. Aftermarket ECUs are for race cars.

As for the junkyard ECU, why do you think that won't be also true for EVs?

[brokenmachine]

You can usually choose different maps with aftermarket ECUs, there's no reason you couldn't load one that passes emissions tests.

I've flashed my own car's stock ECU with a tuned map, but it's easy to load the original one back on.

Anyway, this is a stupid argument, I hardly think that emissions tests will be a reason you can't put an aftermarket ECU into an electric car!

[Grishnakh]

>You can usually choose different maps with aftermarket ECUs, there's no reason you couldn't load one that passes emissions tests.

Will it look exactly like the factory ECU? Most emissions tests now consist of plugging in a device into the OBD-II jack and ensuring the factory emissions equipment has not been tampered with. An aftermarket ECU would fail this; it's "tampering" by definition. Emissions laws generally do no allow any deviation from factory spec or factory equipment. They don't just test the actual emissions levels, and they don't test the levels at all in many places.

>Anyway, this is a stupid argument, I hardly think that emissions tests will be a reason you can't put an aftermarket ECU into an electric car!

It is stupid, because that's not what I claimed at all. One poster claimed that EVs would be too expensive to fix because of non-standard, "only-for-this-car" electronics. I pointed out that this is already true for gasoline cars, with ECUs being an example. Then someone else jumped in and claimed that aftermarket ECUs exist, when in reality they're horribly expensive and only racecars use them, so that claim was irrelevant, and then they admitted that you can just buy a junkyard ECU cheap. I pointed out that this would also be true of EVs, which was just ignored, even though it completely invalidates the argument about EVs being expensive to fix.

Face it: every car has specialized parts, especially electronics. You can't just take an ABS module from a Nissan and slap it into a Ford. You can't take a wheel bearing from an H2 and slap it into a Prius. Parts for mass-market cars have always been available from different places: dealerships for OEM parts at high prices, aftermarket parts for popular models from parts stores, junkyard parts for everything if you can find them and are OK with them being used. This will be no different for EVs; it's stupid to think it would be. And it's also stupid that several different people jumped in here with completely incoherent arguments, all so they could bash EVs.

[brokenmachine]

Yes this whole ECU thread has nothing to do with the original discussion comparing EV and gasoline vehicles wrt how easy it is to get replacement parts.

>> I hardly think that emissions tests will be a reason you can't put an aftermarket ECU into an electric car!

> It is stupid, because that's not what I claimed at all.

Yes you did:

> Your aftermarket ECU won't pass emissions tests

You brought up aftermarket ECUs not passing emissions tests, I just (incorrectly) commented that you could probably load a stock (or what I thought would be emissions-passing) map onto an aftermarket ECU because I wasn't aware about the tampering part. I naively assumed they actually tested the emissions from the car when testing it for emissions. :P

For what it's worth, I agree with you about replacement parts being specialized for all types of cars, and for the record I'd be very surprised if an aftermarket ECU ever appeared for the Tesla, given how closed and hostile to any modification (or even repairs!) they are. You can't even get a service manual if you don't live in Massachusetts, and even then you can only buy access to it on a subscription basis! [1]

In fact, at the moment I'd never even consider buying a Tesla because who knows what it's like to own one after the warranty is up? If my Tesla ECU failed, there's nothing to say it would even be possible to put a legitimate Tesla junkyard ECU in there and have it work without their blessing.

Out of curiosity, do places that have emissions testing actually keep testing cars regularly every year?

[1] https://syonyk.blogspot.com.au/2016/03/is-tesla-building-thr...