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magnaflow upgrade

  1. 2013 Ecoboost 4X4 Power Lag

    F150 Ecoboost Problems
    I put a magnaflow cat back dual system on my truck and it seems that I have lost power since then. It hesitates worse than before and idles rough when cold. I had an issue early on with 2 cylinders misfiring and Ford replaced all 6 a about 20xxx miles. Any one else have issues after exhaust...
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