Failed emissions in NY, help needed

[twizy]

I recently brought a '00 SH with 64k mi on it. I brought the car to my mechanic and the car failed emissions due to the CO content reading 12.38 gpm, 10 gpm being the limit. He recommended replacing the O2 sensors. I spoke to the original owner and he had never replaced the sensors before. The mods on the car are: Greddy EVO catback, DC header, AEM CAI, and Random-tech high flow catalytic converter. I would be really upset if I spent the $250 parts + $160 labor on replacing the O2 sensors and the car failed again, so I was wondering if anyone failed their emissions and what they did to fix it and pass. Is there anything else besides the O2 sensor that would lower CO content? Thanks !

[Loco64670]

It could be The High Flow Cat... That May Be The Culprit To Your Car Failing Nueva Emissions

[Black92LudeSI]

go to pep boys, for 10 bucks get this stuff that you put in your gas tank to pass the test. your not to much above the limit

[twizy]

yea it seems other forums agree that it is the catalytic converter, but i was under the impression that random technologies made their converters to be emissions compliant. i guess i will try the emissions fluid and if that doesn't work i'll have to spend the moolah to replace the catalytic converter.... that sux

[SiGNAL748]

should've kept your stock cat, whenever i add something to my car i keep the original parts just in case.

[twizy]

I woulda kept the stock but I brought the car used with the aftermarket mods already installed, no OEM parts.

[soccmid]

not ur cat. im sorry its not unless it went bad, because i have a high flow cat from r/t and it actually made me pass emissions. i repleced that and the O2 sensor and yay!. and md emissions are a lot lower than ny's i think our cutoff point is like 8.00 for co2. so unless the cat is bad( tap it see if anything rattles) it isnt teh R/T product.

[88 ROCKET]

You might want to give the car a "basic" tune up, Distributor, rotor, plugs and wires... and even a new coil. Make sure you get the right plugs, if the fuel/air mix isn't burning completely and clean, you will get carbon and junk on your O2 sensor and fail your smog.

[twizy]

Now that I think about it, could it be the Apexi VAFCII that is disrupting the fuel/air mix and thereby causing the CO to skyrocket? The car has it installed and I have no clue how to operate it. If I reset the ECU will it bring back the original settings for the fuel/air mix? Maybe this + getting the emissions pass fluid will do the trick?

[crzyCollegeKid]

well, give it a try, keep us posted

[88 ROCKET]

What is a VAFCII?... sorry, I am a back yard mechanic from the 70's/80's

[SiGNAL748]

VTEC/Air/Fuel Controller

[twizy]

update for those still following this thread... i put some of that guaranteed to pass emissions fluid in my gas, and the car passed with flying colors. what a great product.