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Okay ive got the trd duals that came from the factory. THere is a very annoying 1800 rpm drone i would like to get rid of. Its really loud, but when the drone isnt there the truck is almost too quiet. Any ways to get rid of the drone?
Second question is will removing the cats void the warantee on teh engine, or just the exhaust? I dont have to worry about inspection because my dad is a tech :D
 

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I remember something about a little collar thingie that could be installed in the tube to eliminate the drone, but I wouldn't want it myself because it looked like it would add restriction. FWIW you will get used to that drone over time.

Having problems with warranty and emissions testing is pretty likely if you remove catalysts. :cry:
 
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