Rev3 G-Limited exhaust question

[Davsurfa]

Help! Can anyone tell me if this is a cat or just a middle box?



This is the inside

[mr2matt]

Hi

It's a bit difficult to make out whether it's the CAT or back box from the photos, I think it's the CAT pipe but just to be sure which of the parts in the diagram is it?

Part 17400 is the CAT pipe

Part 17430 is the back box



http://i71.photobucket.com/albums/i131/ ... 1398846062

[Davsurfa]

It's where the cat should be but tbh it doesn't look like a cat to me. I'll get some better pics tonight, I thought it might be a middle box(if toyota ever used a middle box on these cars)

[Davsurfa]

The little box is the one with the markings on it, the pic is taken from the engine side of the exhaust

[RazzyRascal]

This looks like the exhaust I had on my rev1 na I think. If so it's non cat, I believe that's a resonator box to keep the noise down.

Mine perished between the back box and the resonator. I could not find a good replacement anywhere so I replaced with a non cat blueflame.

Hope this helps because when I queried this some months back nobody could give me a good answer.

I believe Pre '92 cars are cat exampt for mots also

[Davsurfa]

Pre 92 cars are, shame mine is a 94

[RazzyRascal]

If it's an import Japan's emissions standards weren't tightened until the early 00's so it may be de-cat. Most cats I've ever seen are slightly ribbed and more oval(ish) shaped.

Just trying to think outside the box until somebody comes up with something better.

I think the problem is so few enthusiasts now have totally original cars, the exhaust is usually the first thing to go either for mechanical or cosmetic reasons.