Acceleration = Bad Smell
 

When I beat up my 2004 Mazda 6 a bit (nothing ridiculously excessive ), I get a rotten egg smell, just a fowl oder. From my old car I had it was the catalytic converter. Same deal? Is it something I should really worry about?

Sounds like the cat to me.

Now, is it something I can live with? or will it be dangerous to the car? And what kind of converter would you recommend? I kind of just want to slap a magnaflow cat on it, will atleast give it a bit of sound.

Can you live with it? Sure, for a little while, but a failed cat will at the very least make you fail emissions. Go ahead and go with the Magnaflow unit, it'll get better flow than stock and probably last longer too.

Luckily I don't have an inspection until Feb of 2011, oddly enough I just had my inspection 2 weeks ago and it passed. 208 dollars at Autozone for a new Cat, yay... Now the question is, there is a Passenger Side/Driver Side/Front/Back Cat thing, are there more than 1 Converters? And how would I go abouts finding which one isn't working? Or am I better off taking it into a Mazda Dealer and having them slap the Magnaflow on.

6 cylinder has two in the front and one in the back. I know, I need to replace both of my fronts after my engine blew and dumped a couple of quarts of oil into them.

So would it be in my best interests to just do all of them or specifically target one of them?

What we have in front are pre-cats that reside in the headders. To replace them you have to replace the headers. If replacing the main cat that is after the Y-pipe solves his problem, then he should be good. If not, then he may want to consider going with a set of aftermarket headers to get rid of the pre-cats altogether.

Wouldn't eliminating the front cats throw OBD codes?

Well it looks like I will have my mechanic look into it and just get a mechanics view on everything. Hoping it's just the rear cat and I can just throw on a magnaflow and fix that up easy.

GAH CROSS FINGERSSS