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Old 04-08-2009 | 10:13 PM
  #217  
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houston
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Originally Posted by morfn321
Houston, I just got my new pipe (Dyna 086) and cant wait to run it! My question, is there a better venture to run with this pipe? I have a plus 21-5k and it currently has a 8mm in it. Man I sure hope to see an improvment over the JP-4 pipe I was running.
8mm is good , if you still have horrible runtime , try a 7mm and add .10mm shim on underhead . the engine will feel much better though
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