4 ms·
Sorry to sound stupid but what is the point of an emissions defeat device?
by beardyw 3y ago
Sorry to sound stupid but what is the point of an emissions defeat device?
- codysc 3y agoThey defeat/bypass smog control systems to either boost power, or literally, just blow clouds of diesel exhaust on demand.
- skyyler 3y agoUsually increased performance. ECUs that will happily dump an increased amount of fuel into the engine, for example. High flow exhaust parts that remove catalytic converters, for another example. Both are being sold on eBay.
- toomuchtodo 3y agohttps://en.wikipedia.org/wiki/Rolling_coal https://en.wikipedia.org/wiki/Rolling_coal https://www.mtpr.org/montana-news/2022-11-10/whats-the-deal-with-coal-rolling https://www.mtpr.org/montana-news/2022-11-10/whats-the-deal-... https://www.sierraclub.org/sierra/rolling-coal-backfires https://www.sierraclub.org/sierra/rolling-coal-backfires
- swatcoder 3y agoThere are aesthetic, performance, financial, and ideological reasons for people to evade many regulatory requirements for cars. For emissions in particular, you may miss out on some vrooom or roar from your car, or you may find yourself tasked to make expensive repairs in order to keep it on the road. These are comparatively cheap ways around that.
- LazyMans 3y agoRight. I'm not putting a $1500 catalytic converter on my $1800 prius. Just to have it stolen again.
- brianwawok 3y agoYah thats is super obnoxious. I love the prius but if I couldn't park in a locked garage I would likely sell it for something else ASAP.
- linuxftw 3y agoThere's a multitude or purposes. Improved power being one, improved reliability being another. Modern diesel emissions equipment fails regularly, often in hard to diagnose and repair ways. If you spent $100k on a truck, and you could spend $2k more to 'delete' some emissions equipment to prevent $10k+ worth of repairs in the future, would you do it?
- floren 3y ago[flagged]
- strbean 3y agoSeems likely they are talking about semi trucks, not pickups.
- linuxftw 3y agoWell, a 3500 diesel is all of $100k today (if you're getting 4 door, dually). I personally wouldn't spend that kind of cash unless I needed such a thing (like, to pay my bills with, not pull an RV or something). And if I was paying my bills with it, I'd make sure I keep it one the road, one way or the other.
- doubled112 3y agoIt isn't just 100K trucks. I drive a 2013 VW diesel, and this year the warranty covered an EGR and a DPF, which is exactly the kind of thing deletes remove from the vehicle. That's about $6K in work on a vehicle I paid $14K for a couple of years ago. Next time, when it is out of warranty, should I take the car to the junk yard? Or delete them and never have another issue? Which is really better for the planet? Before anybody asks, no I do NOT want to roll coal. It's stupid and obnoxious. You can put a proper tune on a car and not have that issue. Soot is unburnt fuel, which means wasted fuel. You turned it up too high.
- linuxftw 3y agoYou're lucky it was under warranty (I'm assuming it's an extended warranty). Most manufacturers are only covering those items for 36 months. Imagine if the warranty was a federal minimum 300k miles/20 years. I bet they would design the components so the labor time is zero to replace them.
- bagels 3y agoWell, if you do it right, you put it on your race car to make it go faster and only drive it at the race track. Otherwise, you do it to make your street car faster (and maybe also pollute more), or worse, just generate a bunch of diesel soot to annoy other people with.
- fgsfds028374 3y agoTo asphyxiate cyclists in clouds of toxic soot while you pass them. Speaking from experience
- Scoundreller 3y agoCancel windshield wiper fluid NOW!
- leakybit 3y agoOne motive is that it's cheaper to delete the emission system vs having to replace/repair the unit. Diesels have much more sophisticated emission devices vs gasoline engines, so it's more costly.
- systems_glitch 3y agoOne does not roll coal from e.g. an EGR bypass or delete, though! The only way to get thick clouds of black smoke are too much fuel (turn up the pump) or not oxygen (bag over the air filter in the simplest case). Many states and localities have "visible emissions" rules, where even if your vehicle doesn't have to pass emissions tests, you can still get pulled and cited for actual smoke. I've never been pulled for it (smoke means you're wasting fuel) so I don't know if it's an inconsequential fine or just not enforced generally.
- dieselgate 3y agoIn my lived experience the folks who intentionally want to roll coal are younger guys (something to do in high school) - "matured" diesel owners want little/no smoke for the higher performance
- systems_glitch 3y agoThe few rolling coal around here are midlife crisis types -- I don't think high school kids can afford diesel pickups anymore :P
- Scoundreller 3y agoSometimes to avoid costlier mechanical work like changing O2 sensors, where often cars still give a check-engine-light if you use an aftermarket one (dunno why the aftermarket ones are so poor that they cause emissions problems or if the car’s computer was deliberately/unintentionally so sensitive to force people onto OEM parts).
- ewagsjr 3y agoOh my gosh, I've had to run a new wire for an O2 sensor because mine gave out and it was a PITA but I couldn't afford the labor at the time and it was putting my car in limp mode which disabled cruise control. so not only was it $150 sensor, but also 5 freaking hours of me watching youtube and get cuts on my hands underneath a car.
- bombcar 3y agoLimp mode is so annoying. “Car can go to 3k rpm no more.”
- deleted 3y ago[deleted]
- dieselgate 3y agoOften times it's the removal of a complicated system that is failure prone - less filters to get clogged and stuff like that. Edit: people generally don't do things for the "sole purpose of polluting more" it's often functional. Many diesel drivers don't like others who roll coal as the image is bad in general - heavy equipment will often produce black smoke because the engine is being worked for a purpose and it's literally just being given fuel.
- bsagdiyev 3y agoThis is correct. One of my two modified cars came from CA at some point and had emissions equipment that was standard there but not on 48 state cars. Removal of it didn't impact emissions and the car actually runs cleaner modified than it did when bone stock. But you see a lot of people here who just assume modified == killing baby penguins with emissions or something. Trust me even the car guys don't like the straight piped VQ revving at the car meets.
- deleted 3y ago[deleted]
- codexb 3y agoThere are many examples. Many SUV's in the US these days are only able to meet emissions requirements by automatically turning off the engine at stoplights or whenever the car comes to a stop. Many people find it annoying because there's a delay when you press the accelerator to go and then you press harder and the car then jumps. Most cars allow you to disable it, but you have to do it every time after you turn the car on. No one likes it. You can sometimes modify the car or access hidden computer settings to disable the setting. Technically, it's illegal to do.
- p1mrx 3y agoThat problem can be solved using a sufficiently large electric motor. More people would demand hybrid SUVs if they understood the benefits.
- codexb 3y agoUnlikely. This isn’t a problem of education. The primary benefit of hybrids is fuel efficiency. People who buy large SUVs have already decided that fuel efficiency is not a high priority.
- testfoobar 3y agoIMHO such start/stop is a fraudulent way to meet MPG targets. Almost everyone I know presses the button to turn off the feature the moment they start their car.