Straight piping a 2004 Chevy Silverado 2500hd...?

manda

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what are the pros & cons of straight piping.. could it hurt the vehicle? any information would help.. please & thank you.
and what if i still have the cats on?
 
Back pressure is a necessity to most engines in order to run correctly. You could do serious damage to your engine without some needed back pressure.
 
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