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alrighty ladies and gentlemen, i have a 2017 civic sport recently had the catalytic converter changed (used aftermarket direct fit) since the car was throwing code P0420. I had it diagnosed by a local shop, changed what they told me to change i just couldnt afford the oem $3500 cat converter so...

alright so i have a 2017 civic sport 100,400miles i ordered a 22 si in december still waiting for it to come in (should be end of june). My 17 civic threw a p0420 code about two weeks ago I had the catalytic converter changed... code went away. Well.... its back on. The mechanic shop told me i...

So i have a 2017 civic sport bought brand new now has 101k miles and it just threw its first code, p0420 bad cat convertor i got that fixed, when they ran all the codes apparently my map sensor and maf sensor went to poop as well.. the mechanic said i should def look into a new air intake. Ive...