Hugh

iTrader: (1)

Where have you been getting replacement cats from?

My first cat on my 99 has been shot since I bought the car 75,000 miles and 7 years ago.

I'm looking forward to pulling it off the car to replace it with a turbo manifold.

gjenks

Internet, I believe they were both magnaflow, but I cant find the receipt for this warmup cat. I'd like to go ahead and replace my exhaust from the downpipe and back with a turbo setup in preparation for the turbo...

Braineack

iTrader: (62)

how do you know there cats are dead?

gjenks

Hah, okay, long story?

First, the rear cat imploded on itself. Literally, it broke apart, then plugged my exhaust because it wasnt flowing properly. So it overheated, threw a code, and eventually melted itself closed thus killing my engine. Now, the warm-up cat threw a code, p0421, in addition to a MAF code, p0102.

Note, I replaced both cats just under a year ago for nearly the same codes. The rear cat I replaced accidentally, thinking it was bad when it was really the warm-up that needed replacing.

Hugh

iTrader: (1)

It's always the warm up cat on 99's, isn't it? I mean... Mazda changed that setup in 2001 for a reason. I feel like we're the guinea pigs that got screwed. Should have been a recall.

mgeoffriau

iTrader: (7)

How frequently do you have to get tested? Why not just run a test pipe?

gjenks

I'm just going to replace the whole exhaust with a turbo setup. Also, replace the coils.

Another thing I didn't mention was my gas mileage has never touched 30mpg. Which I know I should be able to, however, it hasn't happened.

Emissions testing every 2 years, but it just has to pass OBD2. However, if they smell that exhaust without that cat, they might know something is up.

Hugh

iTrader: (1)

Yup. Out here in smog land, the cops will smell the exhaust and you get an invitation to go see the state referee. Better have all your ducks in a row when that time comes.

tasty danish

iTrader: (9)

Lmao, FAIL. I even checked over all the posts as I was confused WTF he was talking about. Never thought to check the title. Mine was the only apostrophe I could find.

But who's freaking out? Of course I over-reacted, it's the effing internet. I'm also a pro cage fighter that ***** Rihanna and Shakira after bouts while piping missle's up the Soviet Union's *** (it still exists) from the seat of my F-35.

Hugh

iTrader: (1)

Dude, you're a bad ***!

Braineack

iTrader: (62)

that's a pretty subjective test. lol. I'd load my muffler up with crabs and cheese.

Hugh

iTrader: (1)

Subjective? You know the difference when you smell it, right?

Crabs and cheese... hahaha

Hugh

iTrader: (1)

I should add that it was one guy I know that the cop did that. I'm not sure if they're all running around smelling exhaust or not.

gjenks

That's why you shut off your car when the cop pulls you over. If he smells it on the road you better just run.

gjenks

Anybody have any other ideas as to what is killing my cats?

Hugh

iTrader: (1)

Yup, that's how I always did it. Turn that motor off immediately, and try to wait for them to leave before restarting the car.

We also have mobile sniffers out here that get setup on freeway on-ramps and stuff. They use infrared or something to sense smog coming from gross polluters. They then snap a pic of your license plate, and you get an invitation to a smog check in the mail.

Sorry for off topic... I just find this stuff funny when compared to other states. The money wasted on smog checking little cars while the big trucks just keep dumping pollution kills me.

Hugh

iTrader: (1)

Is your ECU modified in any way, or is your tune still bone stock?

When you put on the new cats, the codes went away for a while?

How's your gas mileage?

gjenks

My gas mileage hovers at 28 highway, it should be higher, I'm pretty sure. Other than the cats, the car is entirely stock right now.

chpmnsws6

iTrader: (12)

Because it was free...

Hugh

iTrader: (1)

Mine gets 28 highway, and always has. Of course that first cat has always been bad.