Bottom line I have run the type of manifold talked about(actually the xs power is probably even lower quality then the obx) and I will tell you (from having a egt gauge and logging egt's on dsmlink on my 1g awd) that running a 14b or 16g at 1g stock boost(10-12psi) did not get things hot enough or flow enough to put this style manifold with obviously cheaper material at riskfor cracking. The two things that are notorious for causing the ebay manifolds to crack are extreme and quick heat cycling and high egts.(that was technical information
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