So my CAT is fried. She rattles like hell. Ever since i changed my sparks, she's run better but rattles more. MPG went up, the sparks looked original ( have 121k) and since i bought it at 118k, its had a p0420.
montana laws dont have emissions, so is it legal to run without a cat? I want a cheap fix. Can i cut the cat out, and replace with a small section of exhaust pipe, fitted with hose clamps? Or does it have to be welded?
or should i just buy a new cat, will it help/hurt my MPG?
I'm looking for good MPG, cheap fix. I have a friend who can weld, but it may take weeks to get him in gear.
I'd recommend getting a new cat. It just doesn't make any sense to me to cut and weld on a straight pipe instead of a cat.. it's the same amount of work. You can get a cat for less than 100 bucks shipped.. and do it the right way. The performance gains of a straight pipe is very negligible.. especially since our vans aren't high performance to begin with. Heck, if you know some recyclers you may even get some money back for your old one.
montana laws dont have emissions, so is it legal to run without a cat? I want a cheap fix. Can i cut the cat out, and replace with a small section of exhaust pipe, fitted with hose clamps? Or does it have to be welded?
The cat is part of the emission control system. Montana might not have laws against it, but it is against federal law to do it. That said, I have read of instances where the converter was hollowed out and reinstalled. Again, against federal law to tamper with emissions equipment.
The cat is part of the emission control system. Montana might not have laws against it, but it is against federal law to do it. That said, I have read of instances where the converter was hollowed out and reinstalled. Again, against federal law to tamper with emissions equipment.
When I replaced my exhaust it was totally empty. I pried it open to check. I was going to sell the junk inside. They do pay good money for it around here.
These vans are computer controlled. If you take the cat out then the O2 sensors will give you fits, so then you have to buy more parts to by pass the sensors to avoid codes popping up..... Best bet, buy a new cat and be done with it. The mileage gained is so minimal it just isn't worth it.
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