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switching from cast ex.manifold to headers

2K views 0 replies 1 participant last post by  ovalwindow 
#1 ·
I have an 89 superduty custom that I'm putting headers on because of warp manifolds and broken bolts. My question is can I take off air pump and air lines and oxygen sensor and not without affecting performance. Im taking off original exhaust and putting on flow masters. Any help would be appreciated
 
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