NmexMAX

iTrader: (22)

My Cipher is better than that.

JHASS

How did you manage being away from your Max for 3 months? How did you get around?

JHASS

Oh btw what were your costs for keeping your car in the shops for that long?

NmexMAX

iTrader: (22)

Who cares, had he listened to us in the first palce, it would have been max 3 hours.

02SE6MT

no. because you said MAF. well any ways they want me to replace 2 other cats. for another 1000 bucks. now if the replaced the rear one which ones need to be replaced? the front two precats? will this part work> http://www.autopartswarehouse.com/pr...verter+Eastern ? it says a directfit for an 02. also is this the assembly that would replace the precats or whatever cat is before the rear cat. i was under the impression that i would have to order each precat for each bank and install them seperately. thanks everyone im supposed to get my car today.

02SE6MT

well the first incompetent mechanic ended up keeping it for about three months doing just the speedo replacement for 300 bucks. now a week at the dealership 1100. and would have been 2500 if i replace all of the cats.

NmexMAX

iTrader: (22)

Why not just get some headers?

02SE6MT

i was thinking about that has to be almost the same price dave b just quoted me a lil over 500 for each one. would removing the precats give me a cel possibly messing up my a/f ratio? thanks

02SE6MT

ill search about headers now but some of the posts are old, anyone have any recommendations on headers. doesnt have to be a big debate. just was wondering if anyone knows of people having good results with a certain brand.

NmexMAX

iTrader: (22)

There's a header thread on top of the 5th gen forum page. Get Cattman.

02SE6MT

thanks ill definitely check those out

NmexMAX

iTrader: (22)

Cats went bad because of your MAF.

02SE6MT

haha slash not , the cats went bad because the engine ran out of oil and ran hot, hot for about an hour on the highway. so get your outta here, i may not have 20+ thousand posts but i am a mechanical engineer and im not stupid. the MAF was perfect and it is still on RIGHT NOW and CAR RUNS GOOD.

02SE6MT

BUT, I still appreciate your help nmex

joking, not gay like

NmexMAX

iTrader: (22)

Did you get your car back?

JiggaD369

iTrader: (11)

How does one know if your cat is on its way out?

Scottwax

iTrader: (8)

Lack of power from about 2000-2500 rpm and up. Plus if you put a vacuum gauge on the engine and slowly rev the engine, the vacuum takes a dive instead of slowly rising.

02SE6MT

yeah got my car back, and apparently you know if your cats went bad because they will clog your main cat in the rear. also im noticing a harsh exhaust (still quiet) sound as if you had an exhaust leak. im curious why my car isnt throwing the p0430 code since one of my cats is melted. i ask because if its still semi intact i need to do something about it soon as to not clog the main cat they just put in.

phatboislim

iTrader: (27)

i need a link to some cat backs..plain and simple...

harmbone2k2

iTrader: (1)

Read the stickies or get your local muffler/exhaust shop to make you one.

NmexMAX

iTrader: (22)

I like my catback the best, it's a true Frankenstein.

phatboislim

iTrader: (27)

care to show it?

NmexMAX

iTrader: (22)

http://forums.maxima.org/showpost.ph...5&postcount=17

phatboislim

iTrader: (27)

its coming out to your stock exhaust?

NmexMAX

iTrader: (22)

The only thing stock is the muffler.

phatboislim

iTrader: (27)

sweet

NmexMAX

iTrader: (22)

Don't let the word 'stock' fool you, that muffler has been proven to support very close to 250whp, so unless you think you're making more than that, an after market catback is useless for power. Of course, if you don't care if your car sounds like a , then go for broke.

Back on topic. Personally I wouldn't think the pre-cats would fail because of the lack of oil. I would imagine something in the engine would fail before the preacts did. Failing precats typically mean high EGT's (lean AFR) which again leads to the MAF/injectors/coils.

phatboislim

iTrader: (27)

not trying to remain off topic, but yea i've read that statment before, so i'm sure i will keep the stock muffler, not to mention i like the stock look.

02SE6MT

For Everyones Information this part located on the following website:
http://www.autopartswarehouse.com/de...03QQ40476.html

WILL replace the factory pre-cats and bolt up to the exhaust manifold. i confirmed this through their live chat with a part rep and he said if you need to replace your precats on a federal spec vehicle this is the "perfect" and "exact" application. for $316.00, less than ONE precat from the factory

NmexMAX

iTrader: (22)

Seems like a good deal. I used have the stock manifolds w/ pre-cats attached, the only thing I sold was the y-pipe. had I known you would have needed them (or anyone) I would have sold them to you/or kept them around.

So, not going the headers route? Makes sense with respect to the price of those vs aftermarket headers.

02SE6MT

not 100% against it, it just seems it may be less hassle than downstream o2 sensors. the headers are definitely my choice if looking for performance. im just between a rock and a hard place bc i would love to do headers, my dad has a welder in austin and a garage but im in san antonio goin to school where i have a gravel parking lot, haha. i may have to take it up to austin, it would give me a place to work on it. and for 300 bucks its kinda easy on the wallet. (usually im not the type of person to throw cheap parts on my car, but it is just a cat right?)

NmexMAX

iTrader: (22)

It's not as bad as you make it out to be. O2 sim would work just fine. Around here, my car doesn;t see emission testing, so I couldn't care less about my SES light. Runs fine the way I have it hooked up (secondary sensor plugged into the primary header port) I have an SES and around town mileage could be better, but I don;t care for my SES and hardly ever do around town driving. And I've been too lazy to install the sim, heck I have 2 of them, just need to hook 1 up and sell the other.

Not sure where the gravel plays a role here. You wont need a welder. A lift would be desirable, but that is an entirely different subject. (i.e. header isntall). Not sure how/what your plans are, but 85% of the people on here would say a weekend in Austin isn't so bad. Got your dad around, a garage, and in the end, roughly 25 more whp.

02SE6MT

'
ya definitely not bad and looks pretty easy, also im in texas so they stick the thing in my tailpipe and the reliability of an o2 sim looks pretty questionable when considering they do emission test here. and how would you go about relocating o2 sensors without welding new bungs after the cat?

Scottwax

iTrader: (8)

Here in the Dallas area, OBDII cars they don't use the tailpipe sniffers, they simply plug into your ODB port and look for codes and to make sure the ECU wasn't recently reset and still in learning mode. Not sure if they do the same in Austin but if you have an SES light on, you don't pass no matter what the tailpipe sniffers say.

If O2 sims don't keep the code from showing up as an SES light or code in the ECU, I wouldn't be able to use them.

NmexMAX

iTrader: (22)

Have you read the header thread yet?

02SE6MT

I did not know that, i thought they did the tialpipe test on all of them but this would make sense because my cars were older and didnt have obd-II so they got it in the tailpipe. are you stock scottwax? whats your setup?

Scottwax

iTrader: (8)

[QUOTE=02SE6MT;6228066are you stock scottwax? whats your setup?[/QUOTE]

Stock other than the OSCAI (homemade cold air) and a FSTB. Considering the phenolic intake spacers when I change plugs (since the intake has to come off anyway), headers and y-pipe if O2 sims will keep the SES light at bay. I'd hate to have to reinstall stock parts every year to pass inspection.

02SE6MT

update: http://www.autopartswarehouse.com/se...294967264+5760

this website now has individual precats for EACH BANK. they look closer to the factory precats than what was previously posted. they are listed for around 300 each.

and im glad to hear the muffler with its design can support ~250 hp as i like the mellow grunt it has now. Every once in a while i like to go fast(er), but the last thing i want is to let everyone know

huffdaddy2008

iTrader: (1)

I'm from Austin and they dont do emissions tests from my experiences.

Nmex, he was talking about the gravel drive way bc of the install right?

OP, i have my OEM precats with about 40K miles on them, but i hope u go with headers. PM me if ur interested.

02SE6MT

hey guys, i need some advice again. as my previous problem suggests i have a major oil leak. i usually just top it off whenever it gets low but i thought id show you guys this picture (which was the first evidence of how severe the leak was) and see what i have to have replaced.

This leaked out of the passenger side of the engine by the FRONT timing cover, oil is all over the side of the engine and alternator. This oil puddle was generated in 30 MINUTES ! It blew my mind seeing that much in so little time. O, thats a size 13 shoe for reference... 30 minutes, while waitin for an oil change, and i see this left behind:


CLICKABLE
http://img394.imageshack.us/my.php?image=spa0225cc8.jpg

My question is simple: would valve covers leak this bad? or does it look more along the lines of a timing chain cover. ANY help would be greatly appreciated. What you think nmex ?

OH and i just saw huffdaddy mention the gravel, this is really what i was missing, i was hoping to gauge whether my car was burning the oil or just spittin it out bc i could never see an oil spot. GLAD I caught it, and im lookin for headers now, however cattman has none on their website, but i have an eerie feeling if i called id be able to place an order.

nMex: looking at the threads for headers im assuming its safe to say in planning for headers, i should also plan to buy a safc controller and have it tuned? im just seeing if i should factor that into my budget, i would wanna do it right.