back box needed!!!

[Navin]

Hi all, I'm looking for a second hand standard back box for my 94 1.8 mx5. possibly a cat too.
Can anyone help??

[Steve]

Like this?
http://cars.donedeal.ie/for-sale/carextras/1902897

[Navin]

yeah, i spotted that one. I only wanted a second hand one though as it will only be on my car just so it will pass its nct, it will be coming off again!! the car failed on emissions and everything was tried to put it right but no good. A friend of my mechanic works in a nct center and he said the next thing he would try would be the back box and then the cat. the back box on the car at the moment has a 4 inch tail pipe so he thinks that could be the problem!!

[charged_rs]

possibly your cat but before you go spending money or stuff that may not fix your problem

check your o2 sensor and your mass airflow sensor first

[Navin]

They were already checked and seem fine!! No leaks in the exhaust ether.