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Super Modulator
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But with the Subie downpipes containing the cats...I don't see how a smog technician would be able to visually tell if you had cat(s) or not. So the visual tests are hit-or-miss depending on where you go I think.
If you're talking about a hollowed-out DP, I agree. But an aftermarket 3" downpipe is very easy to distinguish from the factory downpipe. I don't think a tech would need a second glance to realize it's not factory...
 

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I'll let you know how my PV cells charge my electric car. That's 100% green and I'll smile everytime I pass a gas station. And I'm pretty sure China is the largest consumer of nickel, to produce steel. But that neither here nor there. The refining process of nickel to produce batteries is your arguement as to why electric won't work but the refining of Hydrogen will somehow work better? My elecric car will never in its entire existence produce a gram of pollution, how can you get more green than that?
no im just talking about the Prius battery. as to why electric doesnt work
1. never get the milage, ever. 3 cars on top gear pulled off a 800 mile trip on disel fuel. a 200 mile trip if your lucky on the current batteries in cars today. (under normal driving, not 25MPH everywhere and never hitting the gas. the way normal people drive) people want ease. even if somethings better, it doesnt make it better. if that makes sense.
2. the way we do electricity now is another. it pollutes to much and takes way to long to recharge.

as for the refining of nickel vs. making hydrogen its a lang slide in hydrgens favor. the old way was using current through water called electrolysis splitting the H2 and the O. at $8 per kilogram it was to much money (always a money thing), they'll be down to $3 thanks to Noryl.

trust me, for the low low cost to make (waters free and plenty of it) hydrogen, price per CFM, distance in MPG, and zero emission hydrogen will take over everything one day. electric will die off unless the sun always shines and solar panels make more power some how and batteries last forever.
 

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Geriatric Ginger Mod
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as awesomely interesting this battery vs water vs coal vs gas debate is, it doesn't belong here in this thread.
 

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Super Modulator
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I met some inspetor demanded the factory DP back to pass the inspection. :confused:
this surprises you? replacing the factory downpipe with an aftermarket pipe breaks federal statutes (in short -- your car isn't street legal)
 

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this surprises you? replacing the factory downpipe with an aftermarket pipe breaks federal statutes (in short -- your car isn't street legal)
Then we have no way to pass the inspection, right? no matter what the output shows.

How about aftermarket catback?
 

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Super Modulator
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Then we have no way to pass the inspection, right? no matter what the output shows.

How about aftermarket catback?
Technically, you are right. A catback exaust does not replace any OEM emissions devices, so it is street legal (unless there are noise-level statutes in your region, in which case it depends on the exhaust)
 

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Then we have no way to pass the inspection, right? no matter what the output shows.

How about aftermarket catback?
inspections here are once every two years. takes me under 30 minutes to pull a DP and put in back on. so put the stock one on, get looked at, take it back off. hour or two of your saturday gone and then your good for two years, whys this hard?
 

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Kevin, you're full of crap.

My STi passed emissions just fine the first time around with one cat (Cobb catted DP). After I let it sit for a while and had to renew it, it failed miserably. I attribute that to letting it sit for a while.

Seriously, I'm not sure why I passed just fine the first time and failed miserably the second time around.
 

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The Fruit
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Then we have no way to pass the inspection, right? no matter what the output shows.

How about aftermarket catback?
Catback doesn't matter.. those portions of the exhaust control sound/routing.. they dont have any influence on emissions.
 

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Discussion Starter #52

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Super Modulator
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Discussion Starter #54
^^ Not necessarily... Any turbo subaru has high EGTs... but NA blocks do not. For some reason the 2006/07 2.5 Imprezas do have high NOx... but only in cold weather. There was something up at the testing station regarding the 2.5 Impreza from 06/07
 

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Super Modulator
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Actually, I don't understand the question at all; I'm surprised you did Kevin...
 

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Hate to throw more fuel on the fire but I passed a few months ago in CT. Catless DP with a cat in my midpipe.

Don't remember if we have a visual, but it doesn't look stock. I have the print out where I passed everyhting with flying colors. AP stage zwei.
 

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Discussion Starter #57
What brand downpipe? What was your NOx reading? What is the NOx limit? What type of testing do they do? Idle? Drive? Dyno? Static? Accel/decel?
 

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Hate to throw more fuel on the fire but I passed a few months ago in CT. Catless DP with a cat in my midpipe.

Don't remember if we have a visual, but it doesn't look stock. I have the print out where I passed everyhting with flying colors. AP stage zwei.
Thats not a cat its a resonator for sound.
 

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Thats not a cat its a resonator for sound.
Hate to break it to you, but it is a cat. Looked at it myself during install. BPM turbo back.

From my inspection sheet I have "Visual Inspection Results Catalyst: Pass" and "Emission Test Results Test Type: ODB II RPM: 1118"

No numbers for different levels of things.
 

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Discussion Starter #60
Hate to break it to you, but it is a cat. Looked at it myself during install. BPM turbo back.

From my inspection sheet I have "Visual Inspection Results Catalyst: Pass" and "Emission Test Results Test Type: ODB II RPM: 1118"

No numbers for different levels of things.
BPMs do have a cat and a resonator in the midpipe. So I believe you.

As for your inspection... if you were tested at 1118, that means it was probably an idle test. So you're lucky. You don't live in a state that does advanced smog testing.
 
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