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popping noise

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Old Dec 12, 2004 | 05:25 PM
  #1  
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charlie1
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Default popping noise

I recently had an exhaust upgrade to Vance & Hines shotguns . I had a stage one done my EFI engine and it now has a popping noise its not a constant pop but sporadic and increases with speed w hats my problem???
 
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Old Dec 12, 2004 | 09:10 PM
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Default RE: popping noise

Does it occur on deceleration?

 
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Old Dec 12, 2004 | 10:27 PM
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Default RE: popping noise

deceleration will be normal but under load something sounds wrong
 
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Old Dec 13, 2004 | 01:10 PM
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Default RE: popping noise

check the plugs and see how they are burning.

Reference chart: http://www.triumphspitfire.nl/plugs.html

Chances are, you'll need to have it checked out.
 
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