decat jimny and mot test

Going to decat mine but luckily have got the old cat section that ive emptied and rewelded.

410shotgun wrote: all I did was take off the manifold and break up the cat and tip it out
no cutting or welding and refit it back on sounds and goes better

is there an appreciable improvement in performance ?

i used to take the cats off my vitaras and the MOT fella said "if its not there he cant test it" that is the cat not the jeep
fair inuff i thought,as long as it passed

just had a thought. mines a 99. shouldn't have a manifold cat should it ?

I think some people are getting confused with what the OP has done....................we have 2 "cats". 1 is imediatley after the exhaust manifold (in the engine bay), the other is under the car. I think the first one is more likely some sort of silencer, mine broke up and fell into the main cat under the car blocking it resulting in needed a new cat (under the car)! as for the one at the manifold I just smashed the rest of the honey comb out and refitted the manifold, so effectivly have a straight through manifold but still have the cat under the car.

I suspect this is what the OP has done, not a de cat under the car.

Definately sounds abit meatier.

robs5230 wrote: just had a thought. mines a 99. shouldn't have a manifold cat should it ?

Correct we just have the small cast manifold no cat there, just the one underneath the car.