
I'm about to go to a local dyno shop and just wanna get a checklist from you guys as to what I should make sure I have or should replace..... For starters, my o2 sensor is about 2 or 3 years old in my b13 but when I connect to Conzult, it shows the o2 sensor voltage moving up and down constantly, so that means it's good right? Or should I replace it? Would that affect my tune if I don't replace it and then after the tune, put a brand new one in? What else should I check for? I recently did the plugs and also the fuel filter and cleaned the kn air filter. I have a ve in my b13.