Evo upgrades
yeah. i was able to sense incoming headaches on that civic though. i just spent $$$ on a new clutch on the evo. i wasnt going to spend $$$ on the civic. plus, i didnt realize how hard it was to manage two cars. 
i had the SI as a second car back when i had the 350z but the evo is good for all season - no soft top to be baby-ed in the winter. 
i had the SI as a second car back when i had the 350z but the evo is good for all season - no soft top to be baby-ed in the winter.
There is no definition that says the tailpipe emissions have to be more harmful than the air around us 
. CO2 is not a very harmful gas, guess what we exhale?
Our atmosphere is not composed of pure oxygen, so even if you "perfectly tune" an engine, it's not going to only emit H2O and CO2 without the help of a catalytic converter.
But this is now getting off topic, /threadjack
. CO2 is not a very harmful gas, guess what we exhale?Our atmosphere is not composed of pure oxygen, so even if you "perfectly tune" an engine, it's not going to only emit H2O and CO2 without the help of a catalytic converter.
But this is now getting off topic, /threadjack
This is not true.
Catalytic converter technology has come a long way and is necessary to have on cars now and in the future. Lots of vehicles that drive down the road actually emit cleaner air out of the tail pipe than the air around them. Now, I don't run a cat on any of my cars because I'd rather have power than be a hippie, but I realize it's a pretty selfish thing, because if everybody did that on their cars it would be a huge problem.
Catalytic converter technology has come a long way and is necessary to have on cars now and in the future. Lots of vehicles that drive down the road actually emit cleaner air out of the tail pipe than the air around them. Now, I don't run a cat on any of my cars because I'd rather have power than be a hippie, but I realize it's a pretty selfish thing, because if everybody did that on their cars it would be a huge problem.
As stated in this thread already, yea the air can 'technically' be cleaner than what went into the engine, but that's not the point I was trying to make. The point is, a tuned engine running at stociometric will output only C02 and Water. This isn't me just making things up, it's out of a Washington State Ecology handbook. And if you want to get real hippy about it, how much sense does it make to burn a fossil fuel to scrub air? There's much more effective means out there to remove C02 out of the airstream that don't require combustion.
And as I said previously, Washington State sells the clean air to industry, so screw them and screw my catalytic converter.
http://www.worldcarfans.com/10901081...tic-converters
But will it affect the Evo or us in any way? no.
Newbie
Joined: Oct 2009
Posts: 92
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From: Seattle
The components of a catalytic converter has not changed at all. It's a corrigated ceramic insert that has an extremely thin layer of plantium over it. The platinum reacts to the residual fuel. What has changed are the O2 sensors. Wideband 02's are becoming factory pieces with faster processors that can remap your AF/R's fast enough to reduce emmisions. Proof of this is the post cat 02. These do absolutely nothing except trigger your CEL. If they actually functioned to tune the AF/R's, then the catalytic converter would be required to get accurate readings back to the ECU.
As stated in this thread already, yea the air can 'technically' be cleaner than what went into the engine, but that's not the point I was trying to make. The point is, a tuned engine running at stociometric will output only C02 and Water. This isn't me just making things up, it's out of a Washington State Ecology handbook. And if you want to get real hippy about it, how much sense does it make to burn a fossil fuel to scrub air? There's much more effective means out there to remove C02 out of the airstream that don't require combustion.
And as I said previously, Washington State sells the clean air to industry, so screw them and screw my catalytic converter.
As stated in this thread already, yea the air can 'technically' be cleaner than what went into the engine, but that's not the point I was trying to make. The point is, a tuned engine running at stociometric will output only C02 and Water. This isn't me just making things up, it's out of a Washington State Ecology handbook. And if you want to get real hippy about it, how much sense does it make to burn a fossil fuel to scrub air? There's much more effective means out there to remove C02 out of the airstream that don't require combustion.
And as I said previously, Washington State sells the clean air to industry, so screw them and screw my catalytic converter.
I call your Washington State Ecology handbook and raise you a B.S. in vehicle design. A tuned engine running at stoich will not only output CO2 and H2O. Our atmosphere is about 78% nitrogen, do you think it just disappears? And the point isn't to run engines to scrub the air, the point is to drive a car that doesn't pollute..
This is getting retarded though, so I'm going to stop arguing now.
Newbie
Joined: Oct 2009
Posts: 92
Likes: 0
From: Seattle
Are you dense or something? If it gets pumped into the engine, it has to be pumped out of it. At high temperatures (like during combustion) nitrogen is not inert, and oxidizes to NOx.
You don't know what you're talking about, you're way out of your element.
You don't know what you're talking about, you're way out of your element.
Fuel + Air => Hydrocarbons + Nitrogen Oxides + Carbon Dioxide + Carbon Monoxide + water
Hydrocarbon emissions are fragments of fuel molecules, only partially burned. See Toxicity of Benzene and other Hydrocarbons in exhaust.
Hydrocarbons react in the presence of nitrogen oxides and sunlight to form ground-level ozone, a major component of smog. Ozone irritates the eyes, nose, throat and damages the lungs. A number of exhaust hydrocarbons are also toxic, some with the potential to cause cancer.
Nitrogen Oxides Under high pressure and temperature conditions in an engine, nitrogen and oxygen atoms react to form nitrogen oxides. Nitrogen oxides, like hydrocarbons, are precursors to the formation of ozone and contribute to acid rain. Catalytic converters in car exhaust systems break down heavier nitrogen gases, forming nitrous oxide (NO2) - 300 times more potent than carbon dioxide as a greenhouse gas. Nitrous oxide makes up about 7.2 percent of the gases that cause global warming. Vehicles with catalytic converters produced nearly half of that nitrous oxide. Nitrous oxide also comes from nitrogen-based fertilizers and manure from farm animals.
Carbon Monoxide Carbon monoxide (CO) is a colorless, odorless, poisonous gas, a product of incomplete burning of hydrocarbon-based fuels. Carbon monoxide consists of a single carbon atom and a single oxygen atom linked together (CO), the product Carbon monoxide of incomplete combustion of fuel. Most CO is produced when air-to-fuel ratios are too low in the engine during vehicle starting, when cars are not tuned properly, and at higher altitudes, where thin air reduces the amount of oxygen available for combustion. Two-thirds of the carbon monoxide emissions come from transportation sources, with the largest contribution coming from cars. In urban areas, the passenger vehicle contribution to carbon monoxide pollution can exceed 90%. Read more about Carbon Monoxide
Carbon Dioxide U.S. Environmental Protection Agency (EPA) originally viewed carbon dioxide as a product of "perfect" combustion, but now views CO2 as a pollution concern. Carbon dioxide is a greenhouse gas that traps the earth's heat and contributes to Global Warming.
Accidentally posted, wasn't done yet.... No I'm not way out of my league...
As the highlighted area above in bold shows, it's where my information came from. Note: I did say in the original post, I was certified in the mid 90's, and that's where my information comes from.
NOx doesn't form until combustion temperatures reach over 2200F, which is well above the melting point of Aluminum (1200F I think?) It's not produced by your average car engine that's TUNED, which started this whole debate.
So, back to what I orginally said, the biproduct of a properly tuned engine is C02 and H20. So go take some more e-roids and find someone else to nerdrage on...