Installed this 7 years ago and haven't seen P0420 since.....
Google says it is around $180-225 in 'Merican Monies.
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02-16-2017
Installed this 7 years ago and haven't seen P0420 since.....
Google says it is around $180-225 in 'Merican Monies.
02-16-2017
10-4, autozone sells them so I am going to go this route.
I have already contacted ZZperformance to return the straight pipe and they said that will be fine.
So this weekend I install the walker and see what happens. If I still have an issue I may try switching to Acdelco O2 sensors as I am running Bosch right now and have read mix reviews on those.
thanks for the tip
02-16-2017
If the emulator worked for several years and then the code showed up again, that means the emulator is dead btw. You could've just got a new one but like other said tuning it out is the best way
Sent from my VS995 using Tapatalk
02-22-2017
ended up installing a walker catalytic downpipe and so far so good. Its my wifes car and the performance increase is not a big deal to her. Also the increase in noise and smell was not something she was too excited about.
Side note - I did notice that my long term fuel trim drop pretty much to 0.0 now as before it was slightly higher in the +2-4 range. I also noticed that the downstream O2 sensor never really goes above 0.8 volts where before it would.
02-22-2017
if you had your battery unhooked that cleared the pcm and its relearning, ltft will hit 0.0 when 40% or more throttle is given till the trims learn.
the o2 voltage should dance up and down. never seen mine go past 8.
02-23-2017
Never unhooked the battery.
02-23-2017
the new o2 sensors might be forcing it to relearn. check em again in a week. might be different.
im guessing you had codes? if you cleared the codes, you also reset the pcm. what clearing a code does.
02-23-2017
yeah, I cleared with my scanner.
I'll give them a looksie this weekend
02-23-2017
there ya go. depending on how much you drive it, it could be learned in a day or so. i dont drive mine much so i just wait a week. once they read the same wot every time you know they are learned.
im willing to bet on a stock tune your -15 idle and -12 wot cause thats where most who check theirs find it running. rich. why the cats clog i bet.
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