hi everybody

just had a m o t and it failed on emissions can any one tell me where i can alter it the bloke did nt know how 2 so he could nt pass it or are there any underlinning problems that might be causing this to happen
any help would be great

 

Hello what car? what system do u have on the car??

 

its a 93 wrx and as far as i no its got standard system with a stainless steel back box but i dont know what make it is was on when i bought it ????

 

which down-pipe are you using ?

if its a de-cat then it will fail
or the cat may be buggered .

iirc centre cats weren't used in this year ??????????????

so the problem would lie with the down-pipe.

 

not changed it still the original its got a middle one or a resernater one witch is going next week getting a hayward an scott centre section no warning lights for the cat has come on runs spot on carnt fault it any other way

 

what was the co value? 5.0 ?

 

0.52 first fast idle 3.16 second jibberish to me

 

1993 does'nt need a cat, talk nicely to the mot'er and try to get him to put it through as a non catted category, he should unless he's a total jobsworth.

The standard system does have a centre cat though.

Make sure you're air filter is'nt choked, and you're spark plugs are in good order.

 

new filter ,plugs, coils ...will do seems alright fingers crossed

cheers for advice

danny

 

check the maf at the same time!!!!!!!!!!!!!11