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how would it be illegal. I am pretty sure thats just an exact duplicate of the stok ypipe..just larger diameter and mandrel bent. It should bolt up to the 2nd set of cats/resonators...I think john was talking that his truck has no cats.
 

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more flow...and if it removes the rear cats good...and dont worry about being illegal because there is no o2 senor monitoring them anyway. plus its a larger diameter then stock as well
 

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trueplayboy05, just got done with the y pipe mod.this mod you use 2.25: off the reasonators both sides into a magnaflow double inlet(reversable muffler) to 3" out.any muffler shop can do the job.beats that highly restrictive y setup of toyota into a single 2.25 in/out muff. xrunjon06
 
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