Thread: K&N, De-Cat, Re-map....Worth it on a Derv?
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Old Aug 20, 2012 | 03:31 PM
  #9  
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Oranoco
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From: HertFORDshire
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Originally Posted by Glenn_
Surely drilling holes in a air box will just draw warm air into the engine.
That's why you only do the cold side.
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