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BeckyD @ James Martin Chevy


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Old 09-12-2016, 12:42 AM   #1
shrubby
 
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How much do headers add?

Hi - hope someone might be able to help me with this. I'm going to have the Magnuson installed and already have the SW catbacks. Seems like it might also be a good time to add their headers too.

Of course this would void the 3/36k warranty I'm pretty sure and if not the tune would, but I might take the risk if the benefit outweighs having the warranty. What could I expect to gain by adding the headers?
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Old 09-12-2016, 06:34 AM   #2
LesBaer
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If you can, return the SW cat back and just get a full header system with high flow cats. You can keep the NPP intact. Headers alone should give you about 20rwhp and added insurance against blowing your engine (assuming high-flow cats).
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Old 09-12-2016, 02:02 PM   #3
shrubby
 
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Can't I just buy their headers with high flow cats and use them with the catbacks?
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