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Impreza 1994 wrx emissions

Ricky belton

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Do you know if it was mapped with the previous decat fitted and has it got any other breathing mods (cone filter ,fmic ect ) ? 

Sports cats do sometimes need a bit of heat in them to pass , if it was mot'd when cold ? You could try getting them to re test it when it's hot. 

Failing that you could try a ECU reset and see if that helps reduce the emissions.  There's a sticky how 2 self read and reset classic ecus in the tech section 


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