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Maybe it's a stupid question but what would the difference be from the stock exhaust piping to a Dynomax or Flowmaster catback (I'm not talking about true duals, just the basic cat back kits)? Would I be better off just cutting off my mufflers and adding performance mufflers or is there a advantage to getting the entire catback system? :confused:
 

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bad cat, i beleive cat back kits tubing is also bigger, aiding in more air flow. 2.25" is most, and my 5.0 exhaust tubing is less than that sadly. but just just cutting off your stock mufflers and puttin hipo ones on will help yes, but if u do that also cut off the 3rd cat and resonator. IMO it just better to do all the exhaust at once!! headers hi flow cats etc:)
 
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