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I have a 94 5.9 V8 in my truck. I think my catalytic converter is clogged,
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so I kind of want to hollow it out, because its not as loud as I think it should be, and open up.
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I'm afraid of triggering the O2 sensor or loosing back pressure, therefore losing power.
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What do you guys think I should do?
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Its in the garage with no transmission. I already have a custom Magnaflow exhaust from the cat back. I am also running headers. Not saying I want it louder, but my father in law was running the same system with manifolds, and was louder. Anyone else hollow the cat, or replace it with a straight pipe, or aftermarket piece?
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Its in the garage with no transmission. I already have a custom Magnaflow exhaust from the cat back. I am also running headers. Not saying I want it louder, but my father in law was running the same system with manifolds, and was louder. Anyone else hollow the cat, or replace it with a straight pipe, or aftermarket piece?
Do you have to pass an EMISSIONS TEST ??? You can't just hollow it out . Mopar cats do clog , replace it , get a hi flow cat if you want more flow .
If you have to deal with emissions, get a high flow cat. 
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So getting rid of it all together is no good? Lose hp?
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So getting rid of it all together is no good? Lose hp?
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No emissions on a 94.
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No emissions on a 94.
Hollow it out. I've run test pipes on two different cars with success. At least give it a shot. JMO
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No emissions on a 94.
Hollow it out. I've run test pipes on two different cars with success. At least give it a shot. JMO
But if it trips a check engine fault and they connect a machine to the truck like they do in other states that have commiefornia emissions stds , NY is one i think , it will not pass , they see the light it fails .
Or in some states it's a visual , they look under the truck , NO cat , no pass .
but it's good for you to give the answer the OP is FISHING for ...
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No emissions on a 94.
Hollow it out. I've run test pipes on two different cars with success. At least give it a shot. JMO
But if it trips a check engine fault and they connect a machine to the truck like they do in other states that have commiefornia emissions stds , NY is one i think , it will not pass , they see the light it fails .
Or in some states it's a visual , they look under the truck , NO cat , no pass .
but it's good for you to give the answer the OP is FISHING for ...
I am sorry---what part did you or I miss? He said "no emissions on a 94". (????)
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Metro NYC testing is done with a "sniffer". Upstate is just a visual, if its there physically its ok. Pre '96 does not require NYSVIP to be plugged into vehicle (OBD II only, 96 and later).
Check engine light can not be on.
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Its in the garage with no transmission. I already have a custom Magnaflow exhaust from the cat back. I am also running headers. Not saying I want it louder, but my father in law was running the same system with manifolds, and was louder. Anyone else hollow the cat, or replace it with a straight pipe, or aftermarket piece?
Do you have to pass an EMISSIONS TEST ??? You can't just hollow it out . Mopar cats do clog , replace it , get a hi flow cat if you want more flow .
If there's an Oxygen sensor after the cat more than likely it's going to trip a fault code if you eliminate the cat.
Factory Mopar cats are fairly restrictive so any aftermarket cat will probably flow more especially if you get a high flow one.
If you want it louder you alot of people leave on the cat and get rid of the muffler. It gives you a throaty glass pack like sound, but not as raspy.
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since you dont have emissions, remove the cat and dont worry about it. If you pop a code for the cat then take your rear most o2 sensor and put it in the frame rail. It just looks for clean air, and that will trick the computer to thinking you have a cat on there. I wont say how I know this.