Catless Downpipe VS Colorado Emissions
 

Does anybody get away with a catless downpipe in Colorado? Or know where to take the car to get away with it? I really don't want to spend the extra $ to get a high flow cat...

No emissions down here in pueblo :)

Is your car a pu? New cars have a 5-year get out of emissions card lol. Best thing to do is go on a busy day, be friendly and don't rev your engine. Did that, with my catless DP and passed last year, but I am in AZ. Dude even gave me props on the sounds my car lol

wut?

If you're dumb enough to do that, then you deserve to have to stock out.

If my car sits in the same spot for all of 5 seconds I can smell the anti-emissions stink lol. Get catless right after the next time you're inspected, then worry about it when you need to get inspected again, that's what I'm doing...


Sent from my beard...

In AZ at least, a new car, meaning the most current year of a car, such as 2014, it is not required to go through emissions for 5 years.

And why is that dumb? I have done it many times. Most places are not dicks like California who are very aggressive about their inspections. Most I have attended will merely plug in an ODBII and ensure your hood is shut then check your gas cap. They have never opened my hood on a 1997+ car nor checked any aspect of the emissions systems.

Hmm... Wonder if that shit applies here. Maryland sucks, so I doubt it.

You don't think revving your catless car at an emissions station would be dumb? Perhaps you misunderstood what I mean, because of my vague "that", instead of describing that I was talking about revving at an emissions station. lol

I thought I was being bamboozled! I understand now... Fuck this over seas travel thing. It really takes the ability to think out of you.

I am not sure man, may wanna ask your buddies and see who they go to for inspections, or find a tech that is a state inspector and become buddy buddy with them.

I my self am lucky, I do my own state inspections on my own car, or if I can just get another tech here to run it for me and I have no worries.

My car is a 2010 pu, did some research and apparently in Colorado newer cars are first tested after the fourth model year. So I guess I'm safe until next year... Do you guys think it would be worth it to get a catted downpipe? Or just swap the stock in every other year? My only real worry is failing and then getting a fine or red flagged or something like that.

Do they put a snifter in the tail pipe for emissions? If yes a catted dp won't make a difference you will still fail. If they don't, then it doesn't matter.

Yeah, for MD it says that "new cars are exempt for the first 24 months". I guess that means 4 years until the first time it has to be test...? IDK, its not exactly a clear statement.

They don't put a snifter in the tailpipe but they put a fan in front of the car and test the emissions from behind. I don't know if that would produce the same results as a snifter.

What? That's weird. If you did that on a catless car you would fail. Haha. Just standing near a catless car that has been running for more than a couple of seconds is a give-away. Catted isn't much better.

Check with your NATOR locals and see what they do.

Good idea, yea I'll do that.

Stuff your tail pipes with the sheets you put in the dryer to make your clothes smell good. Problem solved.

When I was in CO I never had to do emissions for my Si. (FYHN) But this is an idea. Get a catless DP, then get two sets of 3" V-band connections and a cat set up in the test pipe area when you have to do emissions. Then get a pipe with v-bands to put back in after. The catalyst will last freaking forever if you only use it once a year. Also right before doing emissions throw some E85 or I've even heard of people putting methanol in the tank.

Maybe you could even do it with the stock cat somehow? That would take some reducers as well though. I saw someone do something like that for their integra that was catless.

If I were to do that I couldn't get a full downpipe right? Because that would block the test pipe area, so I would need to get a 3" downpipe?

I wonder if you would pass if you did just 1 cat. Like if you got a 2 piece catless setup, like turboXS or UR and then swap out the 2nd cat when emissions comes along.

No, I was recommending hacking up a small 5-7" section (depending on the cat) where the test pipe would usually be and making a removable catalyst with v-band connections. Then with the pipe you cut out, make v-band connections there to have a pipe to put in afterwards.
*EDIT*
Also with the added help of Eth or Meth you might clear it. Someone in california posted about the cat in their DP going bad and not passing emissions. But when it was new he actually passed in cali, which really surprised me. So maybe one would be enough if it was used only once a year. He musta known someone because I know cali usually does visual inspections as well.

what is your actual emission test?

in mo we have the 5 year wavier thing too, but they dont actually do a sniffer, they just plug in the obdII and look for codes, so if that is the same as co you can just use the AP to delete out the code

you could just move to El paso County. lol. No emissions here.

The emissions test is supposedly a visual inspection followed by a test simulating real driving with a fan in front of the car and then they measure emissions from the rear and lastly they do a gas cap seal test. No OBD that I know of.

Fucken state regulations. It's not like this in AZ. For 97 and newer (as with everywhere else in the US I believe), they plug you up to an OBDII and scan for CELs. In AZ, if no CELs exist, they check your gas cap and make sure your hood is closed, easy peasy. In fact, after the OBD check, they turn off the car.

On a side note, those fucks in Cali are going way beyond this. They are pushing for car manufacturers to add in a flag on the ECU if it's been flashed (of course this will be for future and not older model cars). That way, when they connect to the OBDII, they can see if you have flashed your ECU or not. This is supposedly irreversible as well; meaning you'd probably have to go to a dealer to certify it and pay to remove the flag after you've been stocked out.

Legislators have no idea how computer work. If that was possible every phone manifacturer would have some system to find if you had rooted/jailbraked your phone.

You obviously don't know that California has NCE to make laws about things they don't know about. In Red Cali, glorious leaders Boxer and Feinstein have a law response for every celebrity backed protest.

*EDIT*
Shit this thread is flying off the rails fast now, probably shouldn't have done that.

I have had the following in Colorado:
Visual, ODB computer guided dyno with fan and tail pipe sniffer,
roadside, quick pass.

during visual if they can see that its missing they can fail you,
it might be possible to pass a tail pipe test dyno test without cats, not certain if it is possible on the DISI motor but I have done this with a Mitsubishi/Dodge Colt turbo with both cats gutted. It is certainly possible to pass the roadside without cats (have done that with the mitsubishi and a VW or two) but would strongly suggest getting a high flow catted DP and running a test pipe (so lose one cat but not both) look for the rapid pass roadside tests and make a point of driving through them at least once per season (you need two good runs through to pass) with a good DP and a high performance metal catalyst you should see gains and keep some tree huggers happy. Luckily they don't do cold start up tests, thats where most of the nasty emissions occur, and I believe removing the catalysts makes it even worse as the ECU tries to get the catalysts running as quick as possible.