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  1. Motorsports Talk
    First off, I have a slightly modified 07 WRX TR (3in. cat back, and STP cold air system). My question is at what RPM is the optimal launch point on a prepared drag strip w/air temps around 85(+/-). I launched at ~4000r's and it was a bit sluggish, and then at a bit higher ~4500-4750r's and I...
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