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Jba long tubes on 2014 gt 02 sensor question

997 views 6 replies 2 participants last post by  Eleazer2 
#1 ·
So I installed my jba long tubes and noticed they have 2 bungs in each header one is up stream on one of the runners and the other is in the collector which one should I use I would like to use the one in the collector but I would have to buy o2 extensions and I've read to stay away from those.
 
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