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Old 04-30-2011
rangerrunner11's Avatar
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punch the cat! tips and how to?

2000 3.0. Im looking to keep stock exhaust. 1. Will punching out the cat do anything? 2. If so do I simply "punch the cat out" with a metal pipe as the name defines? 3. and will this effect my 02 sensor? I know its a loaded question but its a nice sunny day with a sea breeze here in Florida and I wanna mod....that is all...thank you gentlemen

any pictures there may be would be greatly appreciated. THANK YOU
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Old 04-30-2011
t0x1k's Avatar
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Location: Somerdale, NJ
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It will do a lot.
-Get you flamed on many forums
-Open a hole in the Ozone layer
-Fail inspection
-Do absolutely nothing for performance
-Get you a couple bucks at the scrap yard, full of platinum.
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Old 04-30-2011
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I gutted the cat on my diesel. Used a 3 foot piece of steel rebar and a sledgehammer. It doesn't set a CEL on that truck, but the Ranger has like 4 cats and I would imagine if you gut all of them it would set the CEL.
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Old 05-01-2011
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no performance gains, will throw your fuel mixture way off, plus it's illegal to do.
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Old 05-01-2011
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diesels are more lax when it come to emissions. at least in ontario. they just start the car/truck. if there is any smoke that is visible or that doesn't go away. it fails. numerous guys w/ tdi's gut their cats for better performance.

do i recommend it? no.
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Old 05-01-2011
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Just take the cats right out. i got way better fuel economy and power on my mustang with mine out. Just stinks when your sitting in traffic.
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Old 05-01-2011
Join Date: Jun 2007
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there is a downstream cat(the large one by the back of the cab) there are no sensors after it to monitor it. the upstream precats have o2 sensors before and after and removing those with out gapping the sensors out of the exhaust to fake the right results will result in thrown codes, cel, and your motor eating up fuel because it doesnt know wtf is going on.

if your cats are clogged solid you will see a def improvement, if your trucks newer there not and you wont.
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Old 05-01-2011
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i took my down stream cat out
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