how restrictive are the stock cats????

FINICKY

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just wonderin if we could get away with just a catback or would a catted x pipe make a huge difference also??
 

StangD281

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The mufflers and pipes are the constrictive areas. The factory h-pipe has 2 cats & 2 "pre-burners". The high-flow catted X will help big time, but the mufflers may be all you need. If you want sound authority & the x-tra power from the x-pipe, bolt em' both on!
 

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