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How much horsepower did I gain if any by removing my resonators, adding a csi , and x piece with magnaflow mufflers
 

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I have a 3.6 litre 2008 G8 how much horsepower did I gain if any by removing my resonators, adding a csi , and x piece with magnaflow mufflers
 

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Not much.
 

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It depends on what day you installed the csi.
 

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I doubt you'd gain double digits in HP.
Some owners have gone with Solo axle backs and Solo does make a muffler for the V6.
Some have gone to straight pipes to get some oomph outta these engines with varying degrees of success.
Sadly our V6's do not get the same bang for the buck that the V8's get when moding.
 
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