exhaust and emissions

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turbo78 said:
in vegas you can pay the tester 20 bucks and theyll give you a sticker. its all about who you know, not how rich youo blow 😀
Well, I wouldn't phrase it that way. "Work around" sounds much better and is nebulous enough not to get you in trouble in case "They" are reading this site...
 
you are right, but what are the chances of that? i have family down there that can get me a sticker without even taking my car to the sniffer... i cant wait to move there and see how my country down home build stand up at sea level...
i figure 10.50's here should be around a 9.80 there.
 
In NYC the fine for getting caught fudging emissions test is $10,000.00 plus loss of inspection priveledges for 6 months. That would put most shops out of business. Most reputable shops would not think of trying, and yet, there are some that will "pass" you for anywhere from $50 to $100. Plenty of crapboxes go that route, and when you see them clattering along you just shake your head and wonder.
 
I lost all mine except for the cat for now but losing it with the new exhaust and since my car is 30 years old all they check is light brakes horn and wipers...and to make sure it has a muffler. and I have it regestered as a normal car. I have my chevy II regestered as a antique car anf it only cost me 60 bucks every 5 years but is very limited on milage you can put on it
 
In Phoenix, you can't have an altered emissions system at all. So, if they happen to do a visual check (and they often do), a dual exhaust with 2 cats willl get you a big red sticker on your windshield if the original system was single with 1 cat.

That said, there are some things you can do that are still considered 'non-altered' - free flow cat or catback system, and you can use those headers with the AIR tubes, too.

Once you've passed the test, you can pretty much do what you want for 2 yrs, then it's back to the emissions station for another test.
 
yea my wagon came from phoenix and it had everything in tact and the lady I got it from said it was due for there emisions testing thats why she sold it lol
 
One thing good here is no visual inspection. Whatever you do to pass, that's all that counts. So if you need two converters on each head pipe so that crazy big block passes, you're good. I should also mention that the EGR valve is what reduces oxides of nitrogen and that is the biggest cause for failure according to my inspection guys.
 
good to know about the oxides and stuff. i could probably find a 3.5 inch high flow cat that i could fit on my car...
 
Well, there is more to NOX emissions than an EGR valve. There are design considerations having to due with "dead space" in the chamber, cam design and combustion efficiency that can also affect NOX. This is why newer engine designs have done away with the EGR valve: They are designed to be clean enough not to need it. One way to limit NOX and HC is to use a ring package that is closer to the top of the piston than normal. This reduces the amount of space unaffected by combustion, as does tightening the quench area. High swirl head/piston combinations also work to this end as well as having a cam with a wide LSA. Now, some of these things are the opposite of how people build performance engines as they work against high RPM horsepower and durability under boost or nitrous use. However, they are things to consider if building an engine that has to sniff clean. The wide LSA cam allows more cylinder pressure at low RPM's and also allows combustion to have a longer time interval at low speeds. It also can be used to smooth out idle quality and increase low RPM torque and fuel economy. Likewise, hypereutectic pistons are preferred for emissions applications because they can be run at a tighter wall clearance than forged. This also works to decrease dead space, and lowers the amount of unburnt hydrocarbons and NOX. It is also counter intuitive for ultimate strength, but is something to think about in a smog Nazi state.

I would also caution people to think about the upcoming "Cap and Trade" legislation (if it passes the Senate- (S.2191)) which will limit the amount of Co2 you are allowed to emit. This will be achieved with higher taxes on fuel, and an effective doubling of electric rates. You may also see a CO2 tax on cars like the British have as a way to use taxation to force people to use greener technologies. If this happens, it could curtail your ability to drive a modified car as municipalities will be forced to enact strict emissions tests to bring their areas into compliance.
 
If that day comes I will switch to LPG for fuel. There is a refueling station not far from me.
 
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