cat mod
#1
cat mod
i was thinking about chopping off my last cat but i wanted to know if it was worth it or if it makes things worse. i tried searching the topic and couldn't find anything useful.So i guess i'm just asking if it is a good or bad mod soundwise and performance wise. will it increase mileage or decrease mileage? thanks for any help. other suggestions welcome..
#2
On a 2003 you'll get a permanent CEL. The cat is monitored for efficiency by an oxygen sensor downstream of it. If you whack it, you'll get a CEL and it will not pass emission testing if your state cares.
Besides -- the cats on 2001+ are high flow from the factory. It won't do much for you anyway.
Besides -- the cats on 2001+ are high flow from the factory. It won't do much for you anyway.
#3
#5
Well i know a few people that have 01-03 and removed that last cat... plus i am only running 2 cats here in a few weeks. and still utilizing the stock o2 sensors, i should not have a CEL when I am done... but then again i said "should not" LOL
my new ones are high flow aftermarket 6000lb catalytic converters which actually should clean the air better than stock...
my new ones are high flow aftermarket 6000lb catalytic converters which actually should clean the air better than stock...
#7
#12
If your State has an emissions test or a State inspection program that checks for related equipment they can still fail you for not having the device in place even if your tail pipe emissions are within specs.
#15
Thats really not something to brag about. If you have a license through your state commission, you are under a binding contract with them, if you get caught passing vehicles(not including your own) that are out of specs, you can be fined very heavily and around here, our inspectors can not only lose their inspection license, be fined up to but not limited to 10,000 dollars, they can lose their drivers license, and face jail time... The inspection license is nothing to take lightly! Be careful who you gloat around.
#17
#20
probably an egr monitor code. means either your egr valve is stuck open, your egr control solenoid is bad, or your dpfe is bad... replace all three..... be done with it.
#22
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Thats really not something to brag about. If you have a license through your state commission, you are under a binding contract with them, if you get caught passing vehicles(not including your own) that are out of specs, you can be fined very heavily and around here, our inspectors can not only lose their inspection license, be fined up to but not limited to 10,000 dollars, they can lose their drivers license, and face jail time... The inspection license is nothing to take lightly! Be careful who you gloat around.
#23
I wasn't saying i do that to...i was just saying if i took my cat off. I can pass my Safety side of the test Emissions theres no way to cheat it. It plugs into your truck and reads the readings and says if it passes or not. The biggest thing to worry about would be the tailpipe test.
#24
I did it and could not stand it. I gutted both and drove with it like that for 2months. didnt really notice any change except slower take offs.
It was very loud and it sounds stupid because your really not going as fast as it sounds, if that makes sence. Going up a hill is hell and it sounds like your truck is going to explode.
I just finnally found a replacement cat at a junkyard that would sell me one. Now I have the cats with a $20 autozone cherrybomb and it sound great. 3.0v6
It was very loud and it sounds stupid because your really not going as fast as it sounds, if that makes sence. Going up a hill is hell and it sounds like your truck is going to explode.
I just finnally found a replacement cat at a junkyard that would sell me one. Now I have the cats with a $20 autozone cherrybomb and it sound great. 3.0v6
#25
I did it and could not stand it. I gutted both and drove with it like that for 2months. didnt really notice any change except slower take offs.
It was very loud and it sounds stupid because your really not going as fast as it sounds, if that makes sence. Going up a hill is hell and it sounds like your truck is going to explode.
I just finnally found a replacement cat at a junkyard that would sell me one. Now I have the cats with a $20 autozone cherrybomb and it sound great. 3.0v6
It was very loud and it sounds stupid because your really not going as fast as it sounds, if that makes sence. Going up a hill is hell and it sounds like your truck is going to explode.
I just finnally found a replacement cat at a junkyard that would sell me one. Now I have the cats with a $20 autozone cherrybomb and it sound great. 3.0v6
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