JAC

My car is a 1.6l but it's a hatchback (likr the P5) so I don't think anyone in the US makes catback exhausts for my car, can anyone explain to me what it consists of or perhaps show me a link?
That way I could explain what it is to a local shop and have them make me a custom one. is it hard to make one?

midnightblue97

Pretty much any exhaust shop will know what a cat-back exhaust is, and if they don't, do you really want to take your car there?? A cat-back is an exhaust system which replaces everything from the catalytic convertor back, hence the name "Cat-back". It is usually a larger diameter pipe, with a higher flow muffler, which improves sound and power, hoever too large a diameter can be detrimental. I'm not sure if this is only for automatic cars or manual as well, but some of our cars are tuned to work best with a little bit of back pressure. I'm sure someone else on the baord here that has more knowledge than me can elaborate on this subject better, but for now, I'm pretty sure that the largest diameter you should get is 2 1/4".

JAC

The thing is that my country's language is spanish, the first time I heard about cat back exhaust was in this forums and I don't know what it's called in spanish, so I have to explain to the guy what I want, then he will probably tell me what a cat back exhaust is called in spanish and we'll take it from there.

protetype

ok, i'll bite on this since it's not in "The FAQ!" (yes Edwin, I looked and didn't see anything saying what the Allegro had in it) The Allegro down there is a hatch, with a 1.6. Is it the ZM-DE? Maybe give us an engine picture?

JAC

It says, and I quote(and translate ):"Mazda, ZM series. 4 inline cylinders, 16 valve". it's also DOHC.

kosmicride

Catalytic convertor back exhaust pipe.
English translation is catback exhaust.

To this

El tubo catalítica del escape de la espalda de convertor. La traducción inglesa es el escape de catback.

That sound good???

JAC

-not bad kosmicride.

so it's basically replacing the exhaust pipes after the catalitic convertor with ones of larger diameter?

seb

Since we are at this, what is the best size pipe for the Protege5. 2.0L engine, North American version of the car?