Stryke, If you shift @ 5,000 I don't think you ever see your engines true potential. The box's hp doesn't come until 6,250 in my s, maybe even higher in non s models. Really the engine doesn't even start to pull hard until about 4,000rpm. Why not let the engine rev? You wont hurt it revving to 7,000 + as long as its warmed up.
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