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stage 1 cobb
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  1. AccessTUNER
    I wanted to know if anyone has factual dyno numbers on Stage 1 compared to Stage 1+ and Stage 2. I have a 2015 GT-R with the addition of K&N drop in filters & a cat less non resonated midpipe. I love the difference the Cobb stage1 off the shelf map made. In my opinion it is a pretty dramatic...
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