emissions + p0420 = fail: remedies?

[juggalomm]

so, i put on a magnaflow high flow catalytic converter probably about eight months ago, due to my other cat having a hole in it. all was well, then a service engine soon light popped up about two months ago. it was intermittent; it would stay on for a while then randomly disappear, then randomly come back on. so, i go to get my yearly inspection, and they tell me that's the code i was pulling. it's a catalytic converter code. i was told that i must replace this cat with an oem cat. is this true? i asked if i could just replace the oxygen sensors, and they said if it as an o2 sensor failure, it would pull a different code. oem cats are expensive. my magnaflow cat sounds better with my exhaust. i don't wanna get rid of it, and be out a lot of money for a new cat. anything else i can do? i had my codes cleared and drove for 30 miles to get my readiness back to normal, and right around the 32 mile mark, my ses light popped back up.

[smokingachicken]

sorri but you have to get an oem. when i got my exhaust re-routed i found that my cat was clogged, so i bang all the shit out of it and hollowed it, and 50 miles later i get the SES. unless you find a shop that will help you pass emissions i suggest you get a new cat before the end of the year, the guy that helped me with my exhaust work told me cat prices would double on Jan 1st. i dont know about other states, but thats what will happen in cali.

[beat-ol truck]

get a non-fouler, and spae it out some.

[Buddha..]

Quote: Originally Posted by beat-ol truck

get a non-fouler, and spae it out some.

x2

Worked for me and my cat is gutted.

[juggalomm]

stupid ass question, but what's a nonfouler?

nm my google kung fu skills work wonders.
http://forums.evolutionm.net/showthread.php?t=215795

[smokingachicken]

all it does is make the o2 sensor sit further from on the pipe so that a limited amount of exhaust reaches the sensor and your SES wont turn on, but it will do nothing for you to pass emissions, so you will still need a new cat

[Tim99Zr2]

you get emissions over that way? that blows. my truck wouldnt see the streets on that side of the state. hah

i dont even have cats or 02 sensors hooked up

[beat-ol truck]

wait, your truck failed emissions because the MIL was on right??
So by doing a non-fouler, the MIL would go off, and therefore pass emmissions.

I think everyone is thinking of a tailpipe or dyno test. And my high-flow went through the sniffer with the cleanest results I have seen on something its age in a LONG time (also had a somewhat new tune up). 170k+ miles on all origional motor and had 3ppm HC.

[juggalomm]

Quote: Originally Posted by beat-ol truck

wait, your truck failed emissions because the MIL was on right??
So by doing a non-fouler, the MIL would go off, and therefore pass emmissions.

I think everyone is thinking of a tailpipe or dyno test. And my high-flow went through the sniffer with the cleanest results I have seen on something its age in a LONG time (also had a somewhat new tune up). 170k+ miles on all origional motor and had 3ppm HC.

i have done extensive google research (haha) and the non fouler has helped a lot of people in pennsylvania who threw a p0420. after the SES light is cleared, the non fouler allows the readiness to be in check and everything else passes. so thank you very much sir, you have saved me $600 from buying an oem cat. iron city beer for all.

[beat-ol truck]

oh no.....not iron sh!tty......

[hammer dawn]

Quote: Originally Posted by Tim99Zr2

you get emissions over that way? that blows. my truck wouldnt see the streets on that side of the state. hah

i dont even have cats or 02 sensors hooked up

right on ... that truck is bad ass