1991 EX coupe.

 

#17

 

uhhhhhhhhhhhhhhhhhhhhh which number is it?

 

On the very top right it's that big ol device right by numbers 36, 20 and 30 .

Basically it's on the left of your IM just behind the injectors.

 

Gotcha. Thank you very much.

I took my car in for an emissions test and everything was golden except for the oxides of nitrogen reading. I've always had a reading of, like, around 700 on my inspections, but tonight it was 1700+ ppm. People have said possibilities include the EGR valve and the catalytic converter. Any other possibilities?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by knucklehead11 &raquo;</TD></TR><TR><TD CLASS="quote">Gotcha. Thank you very much.

I took my car in for an emissions test and everything was golden except for the oxides of nitrogen reading. I've always had a reading of, like, around 700 on my inspections, but tonight it was 1700+ ppm. People have said possibilities include the EGR valve and the catalytic converter. Any other possibilities?</TD></TR></TABLE>

Depending on mileage and age of the cat, those are usually more likely to fail and have more of an outcome on emissions. The only thing I would do with the EGR would be to clean the access ports but IMO I would replace the cat first. Then look at your a/f ratios and timing. But I think a cat should solve your emission problems and is fairly easy to replace.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .ken &raquo;</TD></TR><TR><TD CLASS="quote">Depending on mileage and age of the cat, those are usually more likely to fail and have more of an outcome on emissions. The only thing I would do with the EGR would be to clean the access ports but IMO I would replace the cat first. Then look at your a/f ratios and timing. But I think a cat should solve your emission problems and is fairly easy to replace.</TD></TR></TABLE>

I know the cat isn't a big deal to replace, EXCEPT I don't have zillions of dollars to buy one. I looked up the part online and with a hookup I could prolly get it for, eh, $600-ish maybe.

Any alternatives?

Also, I noticed a spot on the pipe was burning and giving off some smoke as the dude did the test. I dunno if it's just oil burning off or what. Somewhere in the mid-pipe I believe, before it bends between it and the muffler. Prolly just some gunk stuck to it tho. I did recently take the car in for an oil change and they said the exhaust needed to be looked at. I hope to God it's not the cat tho.

Oh yeah I forgot to add: the car has about 243,600 miles on it. It wouldn't surprise me if it was the cat with those miles.

 

Why are you spending 600ish on a cat???

Go to magnaflow.com and order one for about 50-60 bucks, they work just the same as oem.

With 243K on the car I would say your cat is your main problem. Typically emission places, if you fail, will allow free retests through the 30 day allowance so I would say order a cat and test it and if you need just a little bit then clean your egr ports.

http://www.cb7tuner.com/vbb/showthread.php?t=2495 for both 4th and 5th gens .

 

Yeah that's why I was asking for alternatives. That was just for the Honda replacement. If it is the cat I'll look into an aftermarket such as the magnaflow one.

I appreciate the help dude.

 

No problem man, that's what ht is for .

Carsound is magnaflow and they make great products so if you see carsound just know that it is magnaflow . Either that or call a local exhaust shop and see how much they would sell you one and install it for because some of the older exhaust components are a PITA.

Some parts don't need to be oem replacement because let's face it, 600 bucks is rediculous and I love oem parts .

 

Yeah i know what you mean.

Now, how is the magnaflow cat in respect to the factory cat? Is it one of those free-flow cats that don't restrict as much as in many aftermarket systems and will it change the tone of my exhaust? 'Cause I'm looking for neither. This car is just my daily driver that I don't look to add performance mods to or anything. I just don't want my car to sound like a beehive. 4 banger + aftermarket exhaust = *wears earplugs*

Just curious.

 

It shouldn't because their design has to be effective and is technically an oem replacement, NTM the piping size will typically directly affect your exhaust tone. Just go with oem sizing which I believe is 1.75 and you should be golden .

 

Gotcha. Thanks!

 

would this one be it?

http://www.car-sound.com/catal....aspx

43000 1.75" single sensor cat...

Oh, and I do believe we have the Cali emissions here in my area. That's why I chose that one.

 

But 91 accord isn't obd2 . Look at the 22624 http://www.car-sound.com/catal...ID=17

 

duh me... that's what i get for being lazy and not paying attention when i look... now I just need to know: where's a dealer that would sell this?

 

Buy it either online or call your local exhaust shops and see how much they sell them for and possibly how much for install. Worst case try ebay or directly through magnaflow . GL and post up what your nox were after the cat .