Quick Sum. I have my 08 cobalt with SAI. If i put an aftermarket downpipe in will it need to be tuned to clear a code, or it will be fine? also its need one bung for the 02 sensor but does not need one for wideband correct?

 

You dont need the second bung if you dont plan on using a wideband but if youre going to do anything to your car later on i would reccomend getting one it will save your car. from what ive seen some throw codes some dont its hit or miss. it will definitely throw a code if you go catless

 

ive been catless four like 8 months and still no codes thrown

 

well is fully bolted and cammed going to need a extra bung??

 

you are a TC not a 2.2

get trifecta in and you will get a new car