The first two times I went I barely failed the 15mp CO standard 1.20 with 1st time 2.82, 2nd time 3.85. Everything else was fine.Before second trip I replaced only the air filter thinking my car didn’t get enough oxygen at low speed, It already had new Exhaust system & Cat converter.

3rd time before going replaced O2 sensors, Dizzy Cap/Rotor, Oil Change, Vtec Oil Pressure Switch (went bad), Main Relay (went bad), Emissions gaurantee pass gas crap & later Seafoam in oil/gas/TB, and failed even worse!

HC 15mph Standard 212 failed with 266

CO 25mph Standard 1.33 failed with 3.02
CO 15mph Standard 1.20 failed with 4.22

So the last thing I did was adjust my timing which was off before going for the 4th time and yet again I failed even worse!!

HC 25mph Standard 206 failed with 244
HC 15mph Standard 212 failed with 254

CO 25mph Standard 1.33 failed with 5.22
CO 15mph Standard 1.20 failed with 4.35

What the HELL am I doing wrong??

 

new cat ...maybe? i don't really know, but it seems that way to me. the cat converts C0 and HC to C02 and H20.

did you retard your timing?

 

did you ground that wire under the dash when timing the engine...i hear this throws it off a bit.

 

Weld an extra cat. It's ghetto but it works and it would be temporary.

 

Yes slmd2ndgen, I jumped the service connector.

gutterslide, the first two times I did the emissions the cat was on but I barely passed emissions. It seems the more I tried correcting the problem the worse the outcome. I doubled check the O2 sensors to make sure I didn't cross them.

Anybody else has any ideas??

Thanks
JG

 

Sorry fast88std, that's too much work but thanks any way.

Anybody else??

JG

 

you took your cat off for the 2nd 2 times?!

 

I work at an emissions testing place in ohio, heres some things i've learned.

Garenteed pass is a joke and usually makes emissions worse.
EGR valves are the primary reason cars fail.
Advance the timing a bit and try it again.

 

don't EGR problems cause high N0x?

 

gutterslide, my cat was never taken off, I've got a new high flow cat.

Yea, I read that EGR is for NOx. Also, does the 90 Si have an EGR? My book says for 84-87 but not sure on this one.

I believe my timing was advanced, it was off for sure but not sure which way.

JG

 

damn U guys get 4 times ?
jersey inspection said I can only take it 2 times.1st one is 45 days second is 15 days.I gotta get this done.

 

Um no, I had to pay twice now! $80 bucks down the hole! Plus over 2 bills worth of parts and a new timing gun and still no hope.

I went to a different locations, at the 2nd emissions center, the lady is helping me out a little. Your supposed to get two chances but she see's that I'm going through hell and is giving me three chances. The next one is my last so that's why asking for help!

JG

 

Oh yea, it's only 15 days to get it done right on both tries. So wankel kel, your better off then me!

 

high flow cat? that's probably your problem. they don't work as good as regular cats, especially depending on the brand.

 

clear all of those additives out of your cars system and you'll do better. don't you realize that when you add additives that get rid of CARBON buildup like seafoam that for a little while you are going to release more hydroCARBONS. yes egr valves reduce N0x emmisions and no your car does not have one.
you probably just failed with high CO because your motor is running lean, so replacing the air filter is just going to make that worse. do you have an adjustable fuel pressure regulator or are you still using stock?

 

i always run my tank down to 1/4 or 1/8 full and put some 99% rubbibg alcohol in the gas tank. i pass every time. the alcohol burns hotter so the catalyst lights off hotter and does its job. make sure and drive it real hard before you go in and get tested. try to catch it on a day that you won`t have to wait in line .

 

High CO is an indication that you're running rich, HC is unburnt fuel, a new cat will normally mask this kinda stuff. What is your setup?

 

high HC's means you're running rich not CO. and i'll agree with anyone else, if you have a "high flow" cat, take that crap off and put on a good one.

 

Thanks for the replies everyone....

When I did the first test, I already had the exhaust and High flow cat on and barely failed the CO 15mph test. So I don't think it's the cat, and other people have past with this on from my understanding. It wasn't until I started doing everything else that it went down hill.

My cat is a Magnaflow, a decent product I would assume.

90sirex, I'm still using stock fuel pressure regulaor.

Bunger, my set up is a 2000 Si head (a little work done to it)/99 block, Typhoon manifold with integra (96 beleive) fuel rail and FPR, CAI, Stock header, Invidia exhaust (SWEET!). I've got a Type R TB & manifold but will put on later once I get this mess cleared up.

Thanks
JG

 

Which ECU?

 

JDM ECU.

I had a JDM B16a but that blew, don't ask, then we dropped this engine (USDM) a few months back and finally tried passing emissions. I don't think this would be the issue, maybe??

JG


Modified by JG90CRX-Si at 5:25 PM 6/28/2005

 

yeah make sure your car is hot when you get it tested.. drive it on the highway for a while before you go again, cause your cat has to be hot before it really starts working. if you put your stock cat back on too, that might help. there is a reason they make high flow cats, and its not for passing emissions.. is there a place you could go that could test you off the record? like a gas station or something? cause thats what i do when i get my 70 nova tested. ill take it to this shady gas station place that will test off the record, and then i take it to the state envirotest place for the real one.

 

I believe once your cars is over 20 or at least 25 years you don't have to pass emissions. My brother has a 70 something firebird and he didn't have to do the emissions part, at least here in TX.

Yea, I hear to run the hell out of your car to heat it up, but the way I'm going I'd have to set my cat on fire to pass!

 

Which cat # are u running from the magnaflow product?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90sirex &raquo;</TD></TR><TR><TD CLASS="quote">high HC's means you're running rich not CO. and i'll agree with anyone else, if you have a "high flow" cat, take that crap off and put on a good one.</TD></TR></TABLE>

HC is unburnt fuel from incomplete combustion, CO is an indicator of running rich (pretty much any time its about 2.00) So lets not confuse the issue here.

JG90CRX-Si... Are you running OBD-0 or OBD-1??? (or other)... If you're running OBD-0 with the 96 integra FPR, the fuel pressue may be too high for that ECU. If I remember correctly, the OBD-1 + FPRs are in the 46-48 psi and the OBD-0 are 43-44 psi, this could be enough to cause your car to run rich.

So tell us exactly what ECU you're running. PR3? P30?