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Removing the rear cats..... Cause an issue?

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Old 08-10-2011, 12:39 PM   #1
Warputer [OP] Warputer is offline
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Question Removing the rear cats..... Cause an issue?

Getting pipes/muffler tomorrow & wanted to know if you guys have had any issues with removing the rear cats, just before the "Y"? Gas mileage decrease? Warrenty issue? Any check engine light......etc?

2011 DC 4x4.............Thanks for any input you can give guys!
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Old 08-10-2011, 12:41 PM   #2
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Quote:
Originally Posted by Warputer View Post
Getting pipes/muffler tomorrow & wanted to know if you guys have had any issues with removing the rear cats, just before the "Y"? Gas mileage decrease? Warrenty issue? Any check engine light......etc?

2011 DC 4x4.............Thanks for any input you can give guys!
Smog inspection??????????????
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Old 08-10-2011, 12:42 PM   #3
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It wont cause your check engine light to come on, that will only happen if you pull the primary cats. The computer only monitors the primary cats.
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Old 08-10-2011, 12:45 PM   #4
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You will probably lose some low end power but gain top end power. Also the exhaust might get a tad raspy. It is a V6 after all.
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Old 08-10-2011, 12:46 PM   #5
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Originally Posted by vbibi View Post
Smog inspection??????????????
No vehicle inspections in our back country State.....
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Old 08-10-2011, 12:49 PM   #6
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URD makes a y-pipe that replaces the rear CATs. You will have to put two bungs in though for the rear O2 sensors or you will get CEL's. The one pictured below is for pre-runners.

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Old 08-11-2011, 01:50 AM   #7
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No issues. Your exhaust will get a bit louder, so if you still have the stock exhaust you'll end up changing that also because it won't sound that great with the stock muffler.
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