Originally posted by Big Yellow
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Flapper Mod, Does it reduce Back pressure?
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Yeah its good. Its not too bad. I think ive gotten used to it haha and my missus can fall asleep in the car so i dont think it bothers her.
Front section of stock exhaust is like a 2" pipe with a very flat collector after the cats which causes the most restrictions. Mine is chopped off here and made round and welded onto new catback. I think we went for 2.5" in the end with straight thru mufflers hence the loudness. Screams like a jet now
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