i have headers to a chearry bomb then berfor the muffler i have a nother cherry bomb there differant sizes the firt one is big and the 2nd one at the end is small i tooke the 1st one off cuz it scrapes the speed bumbs and now i get a check engine light and the obd2 says its a miss fire in cylinder 2 is it burning up my plugs or wut or could it be an o2 sensor miss reading i dont under stand cuz i have friends who hve straight pipeing and dont have this problam how can i get rid of that big *** cherry bomb and keep the check engine light off with out putting a cat on

 

your misfire has gotta be a seprate issue. i put on the 1/4 watt 1 mili ohm resistor on the black wire of the second o2 sensor to keep keep from getting the catalyst efficiency code and i dont have a cat just a longtube header. i ran it open header for a while before i got my exhaust and i had no problems it was just alot slower with no muffler or anything

 

well for some reason with it on it wont throw a code but when i take it off and replase it w regular pipeing after like a day of driving it like that it throws a code for miss fire in a certain cylinder i put it back on and it never gave me the problam again but i dont wunt the cheery bomp i wunt straight piping its crazy i dont under stand

 

reset the pcm! and try taking off the o2 sensor and putting outside! if dont work its the sensor maybe its death and about missing fire, check out the spark plug, wires, and the injectors maybe a injector wire its cutter from inside!