Just got back from the dealer- 01 cali-spec 112k miles...confirmed a p0430 and quoted me $1300 for a "front exhaust tube" and 2 o2 sensors. That, obviously, is not happening. However I was wondering what you guys usually do, I know this is a common problem. I've got an inspection coming up, and i'm not sure whether to try and get a used stock y-pipe from someone on here, or an aftermarket like from cattman or stillen, or even warpspeed. Do I even need the o2's? the SES goes on and off by itself every few days. The service advisor said "your cat failed the efficiency test miserably"

I know oxygen sensors would be a good idea anyway, from my mileage..probly get those from dave b. or autozone...is there any programming for those after the install? Alright thanks in advance for opinions/suggestions, i'm open to pretty much everything.

edit: service advisor also said, "it usually starts here and goes from bad to worse, i mean its plugged pretty bad so.." then said the thing about the efficiency test. car still pulls like a badass though, it runs fine, doesnt hesitate, no slow spots in the RPM range so is it even possible its plugged?

 

I think this is another fine example of the stealership at it's best (or worst, whatever you prefer). You could buy a y-pipe, though I would recommend since you live in NY you check the emissions laws, (or call the company you are going to buy from and ask if it will pass a NY emissions test). I dont have a y-pipe, I live in NY, so I cant say anything. Anyway.... I had an 01 recently (RIP) and the O2 sensors are infamous for going bad. I would just replace one O2 sensor, let me guess, the scanner said bank 2? I would just go with that one for now, you can do it yourself, and save some money. My .02

 

i'm prety sure the "emmision" test has not made it up to albany yet.

just go aftermarket

 

Yep your right he said sensor 2 bank 2, thats the back one behind the second precat right? I'm gonna replace that one first, actually gonna see if it passes inspection then do the o2, also want to test it with a multimeter like they described in the other "catalytic convertor" thread

 

So sue me.... If he wants an an aftermarket y-pipe fine, it just seems like he didnt want his ses light on, so he could pass inspection. Like I said, I dont have an aftermarket y-pipe, so I dont know if it messes with anything. I didnt say dont do it, I said replace the O2 sensor first, if he just wants to pass inspection w/o a whole lot of money involved.

 

I've heard quite a few cases of aftermarket Y-pipes passing emissions tests... especially if the inspector doesnt really know what to look for. If he knows his **** though, look out because they are not street legal from what I've read.

You should probably not listen to me because I have never passed an emissions test




(This is because Michigan, being the state that Detroit is located in, does not have gay hippie california emissions tests, at least to the best of my knowledge.)

 

You will pass an emmissions test as long as you have the main cat still and the car is fully warmed up(NY still dose not have one).

The best way to get rid of the secondary o2 sensor codes is with a dual o2 sim...

You will NOT pass a NY Inspection with an o2 sensor code stored.

I can pass a NY Inspection with headers thanks to my dual o2 sim.... PS, you will need to keep the sensors on the car and hooked up for the heater circuit... OR, you could get a Heater Sim also and remove them.

 

Thanks upstate... you can get those off that o2simulator website right? I want to test the sensors I have now too I'll post when I get results of that, are they all supposed to be 10-15 kOhms?

 

when does your ses light come on? is it at certain times, like when you're at highway speeds and you push the engine into high rpms to accelerate quickly?

 

I say go and order headers from Cattman. You also get a y-pipe when you order headers from them. Just my $.02.

 

Go cattman.. You don't have to worry about emissions living in toga.. lol

 

Haha... if i could afford the $671 the dealer wants JUST for the part I'd get headers. The light comes on by itself, just cruising, like i'll be driving down the highway goin 45-55 or so it'll pop on for a few days. Actually it hasent came back on since I had the diagnostic done at the dealer, went and got it inspected today and it passed emissions! Although i'm sure o2 sensors should be done, i'm not gonna worry about it right now.

 

u have an 01 so i wouldnt go w/ the headers. just get aftermarket y pipe, gain a few ponies, order the O2's from dave b or or online somewhere or dual output O2 sim and call it a day.