so first thing performance-wise is to lesten the loudness of my exhaust.. it has 2.5 piping. no cat not nothing just a oval muff. so I ordered two resonators a 14 in one to put where the cat originally goes, and a 22 inch resonator where the resonator goes and am thinking of getting a SNL twin loop. but here's the question... it has no o2 bung at all I got one also but do noot know where to place it. how many inches away from the header flange collector do I have to put it. this is going back to the rear of the car from the header. so any info please let me know.

 

bump