Some smog info for Evo

[nightwalker]

Just in case any of you "de-catted" guys were wondering about your emissions, this is what they look like.
http://i41.photobucket.com/albums/e289/Phia_Cha/smog.jpg

This is a XI with intake, downpipe, O2 housing, test pipe, catback, Ebay FMIC, fuel pump and a tune. The top part is at 2500 rpm's, and the bottom is at idle. The EVO can't be dynoed, so this is what you're going to go through when you have to smog it.

The limits for 2500 are 120ppm HC, and 1% CO. For idle, it's 100ppm HC, and 1% CO. NoX isn't measured in a two speed idle test so you don't have to worry about it, just make sure your EGR valve is working.

I'll update this post again as soon as I get more evo data. I'm going to take a sniff at a 272 cammed, test pipe, 880cc, EVO 8. I'll post the data in a couple days.

Then we're going to put cats on the two cars and see if they clean up enough to pass. I think a lot of you will want to know this. So stay tuned.

[wilson1]

thanks for the info!

[uhoh_evo]

Excuse the noob question, but what does ppm stand for? And the limit at idle is 100 as opposed to a 2500 rev which is 120? So why is that car's ppm reading so much higher at idle than at 2500?

[jessmanEVO]

YGPM

[Evo9R]

cool info

[tkeirin]

nice info :D

[XVeloX]

Excuse the noob question, but what does ppm stand for? And the limit at idle is 100 as opposed to a 2500 rev which is 120? So why is that car's ppm reading so much higher at idle than at 2500?


parts per million... just a way of measuring how much of this crap is coming out of your tailpipe.

Interested in the 272 cammed evo 8 lol.

So would this car even be close to passing smog as is? I see you posted the limits, but how firm are they?

[Matz]

This is awesome info! Just out of curiosity, how are you doing these tests w/o the data getting transmitted? I thought that once the tests were run and failed on a VIN, that status was logged with the DMV or something.

[uhoh_evo]

Thanks Velo for clearing up some of that for me

[mr05evo]

Ince info.

[nightwalker]

The limits are FIRM. It's what is going to show up on a smog report. These are MAX limits. On a stock EVO, around 5-10 ppm HC, and .1% CO is what is commong with both 2500 and idle.

as far as getting the info without transmitting the smog? Don't worry about it. ;)

[sprytsi]

It is called a Test Smog, they don't transmit to DMV and it really doesn't even need your VIN.

I used to run a Test before 'officially' smogging my 1G. I almost got it to pass with a B16G, 550s, AFC, Turbo Back (no Cat). It failed on idle because it was running too rich.

[MarkSAE]

Really good info! I didn't know the HC ppm limit was so high for the evo. I thought most newer cars had to get under 100 ppm.

[nightwalker]

the limits are different for a two speed idle and dyno smog. Luckily, we get the "relaxed" version.

[BOOSTX2]

Nice Info, Gotta do one of these next spring.. :(

[MarkSAE]

nightwalker, if you want to test my car w/ hks 264i/272e cams and a Helix high flow cat, lemme know. I'm curious about the #s myself. My plan has been to just reinstall the stock cat for smog tests.

[awdaddict]

nightwalker, if you want to test my car w/ hks 264i/272e cams and a Helix high flow cat, lemme know. I'm curious about the #s myself. My plan has been to just reinstall the stock cat for smog tests.

I have HKS 264/272 and a RT HFC.
I passed with HKS 264/272 and stock exhaust. I'm curious how the #s are w/o stock cat as well!

[nightwalker]

If you don't mind driving up to Truckee, I'll put your car on the sniffer no charge to take a peek at the emissions.

[MarkSAE]

okay, that's a bit far to drive just to get some sniffer readings. n/m

[Full Function]

i always wanted to run a test on a couple of the cars here... I cant help but to think how bad they would fail with the amount of crap that comes out the tail pipe on the dyno. Maybe I can talk Pat into a test run when he's on C16 just for S&G.

Jerry

[sprytsi]

I may be able to work out a "Test Only" deal with my smog tech friend in Walnut Creek if there is much interest. PM me if you are interested and I'll talk to him.

[rlevo]

We all thank you for the info. I am always wondering what is the max mod you can make while staying clean in the sniffing machine.

[ST]

another test is just to lean things out for smog test....which can easily be done. i'd be curious about that too....thats what a lot of the newer cars are doing.

[MR EVO 8]

My buddy runs his gig in San Ramon so I did a pre-test smog back in April...

Idle:

CO2% 12.5
HC 2434 MAX = (100)
CO% 0.95

2500rpm:

CO2% 14.0
HC 138 MAX = (130)
CO% 0.97

Yes, my car was a gross polluter! Keep in mind this is with 280/280 and a Helix HFC running rich.

[bssybeep]

I'm interested in these tests as well. What kind of cats are going to be used for the test, stock or HFC? I'm hoping HFCs since that seems to be what most of us are running (I'll be running a Bushur HFC).

[mbrickner]

I'm interested in more numbers..

[nightwalker]

I've been playing with my car, which has Helix 272's and comparing them to my roommate's, which is just a 9 with injectors, fuel pump, and tune.

Our numbers are actually really close. I have more HC's at idle because of the lope at idle. If I bump the rpm's up a little so the overlap is less, the HC's start going away. The BAR is hard enough on us already, so don't try and argue with a smog tech, he'll just get annoyed. (Yes, the BAR likes to rape us randomly, that's why no one is willing to "hook it up")

Both our cars were tested catless. With cats, and just a tad leaner tune, our cars would pass no problem. You don't want a super lean tune because you'll end up getting a lean missfire, which will shoot HC's through the roof.

The thing I would be worried about is the visual. A lot of smog techs are not familiar with our cars, so they'll tell you to go away if there is anything questionable.

If you have CARB numbers with your parts, then you'll be ok, but IC pipes, ebay intakes, o2 housings, downpipes, etc. won't be looked favorably upon.

[mbrickner]

So exhaust after the cat shouldn't matter right?

What I don't like is even if it does pass, they will fail for an intake or downpipe. It will pass with flying colors, but because it's not "CARB approved" they won't let it pass. They just don't like people who modify their cars because they drive ford Taurus's.

[Nsin]

I thought dmv required my car be smogged. i got my renewal registration, and it said smog abatement fee! I have a 03, isnt smog every 5 years for our evos? Thas cool, my turbo kit is a go!:lol:

[redevil9mr]

Everyone should own like 2 evos, one stock and one modified. When smog comes, switch over your license plate. :D

[redevil9mr]

Anyone ever tried that method before??

[sprytsi]

A smog tech is supposed to check the VIN I believe. You just have to have a smog tech that either doesn't care or hates his job.

[Nsin]

Do they look at vin #?

[DoggDicker]

Do they look at vin #?


When I had my 4-runner smogged this Jun, they checked the VIN...

DD

[redevil9mr]

Just pay them some cash and some will hook it up. :D

[redevil9mr]

In order to get some, you need to give some. :D

[mbrickner]

So swap the VIN tag on the dash.. they aren't going to look anywhere else..

[DirectorSe7en]

Each car has about 4-5 and sometimes more locations for VIN numbers. So if you do swap the dash, better pray they dont check elsewhere.

[nightwalker]

we tag the barcode on the door, then check the dash to make sure they match. that's about it

[redevil9mr]

I think the only two location that they will check is the VIN on the dash and the door jam.

[DirectorSe7en]

Hmm, so in theory you could totally get away with VIN swapping?

[overdrive]

thanks for the info!


+1!

[nightwalker]

Hmm, so in theory you could totally get away with VIN swapping?


:lol: my lips are sealed

[DirectorSe7en]

:shock:

;)

[redevil9mr]

Yes, in theory you can get away. :D

[Pops]

Hmm, so in theory you could totally get away with VIN swapping?


:lol: my lips are sealed


Have you thought about trying unleaded race gas to see if it makes a difference, or diluting the gas with ethonol or toulene?

[mbrickner]

Would be interesting.. just need something to lower emissions at idle.

Set it leaner right when you get there maybe?

[redevil9mr]

Put back your stock cat when you go for a smog.

[mbrickner]

Well yes, of course! I am just interested in all the data.

[turboevo8]

It's going to be awhile, but I will probably test stock exhaust stock turbo 720's, and 272's to see if that will pass, as changing the cams are little painful.

[redevil9mr]

Do the 272 cams won't pass due to the lopey idle or due to visual inspections.

[turboevo8]

My car does not idle lopey and you can't tell the cams are there visually.