nine-44

MSD makes a unit that allows you to dail in or tune your injectors induvidually. I'm possibly going this route, well, it's an option atleast. Here's the question, could I put an O2 bung on each exhaust runner for monitoring without hurting the flow too bad. I would use one O2 and AF monitor, and switch it from each runner as I tune them induvidually. After I'm done with tuning, I would use a plug for the O2 holes in the exhaust runner. Do you think this would hurt the exhaust flow while not in tuning?