the exhaust can be repositioned fellas, the way the tips are have kinda grown on me so I dont plan on changing anything. As far as power goes, the FI/Stillen have shown identical gains. But the OP asked about the Berk and Stillen exhaust, so those with the Berks or Stillen CBE's please share your experiences.
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2011 Mustang 5.0 | 3.55's | Lethal Performance off road H-Pipe | Magnaflow Muffler Delete | JLT CAI/Bama tuned 417whp/ 404 ft/lbs
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