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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...
  2. Engine Modifications
    i've heard people say dumping the clutch is bad (which i know) but then they refer to slipping the clutch. I'm not quite sure on what that is. if someone could explain in detail how to launch it and what slipping the clutch is that would be really appreciated. :sadwave:
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