friends car,, io want to confirm...

code 67=Catalyst system Efficiency Below Threshold malfunctioning or defective catalyst system


so changing the cat will solce this...

what kind of cats are interchangable for 2000 si.. i know it has a 1st and secondary O2 sensor.. would any obd2 cat work for this car??? So we can buy it used..

TIA folks

 

anyone???

 

a cat is a cat. its all the same. does all the same funtions. so yes any cat will work. id suggest a hi flow cat if u are somewhat into performance

 

yes but if he gets a hi flow cat... then he will throw the same code.... (happed on my friends si)