yo, its john... i just thought about another question i needed to ask... the sr elbow has two holes, one for 02 and the other for i dont know what... on mine the o2 is plugged(with a thing that screws in) and the other isnt... should i run a o2 or what should i do better yet?

im getting the pics from my blackberry so they are coming, send some pics of the vert or the engine!